The theory, now generally held, that an embryo develops progressively from an undifferentiated cell is called​

Answers

Answer 1
Answer:
Epigenesis

Explanation:
development of a plant or animal from an egg or spore through a series of processes in which unorganized cell masses differentiate into organs and organ systems.

Related Questions

What does lightning contribute to that can ultimately help local ecosystems recycle nutrients in the soil?
Noise pollution
Wildfires
Migratory navigation for birds
Heat in local bodies of water

Answers

Lightning can contribute to wildfires, which can ultimately help local ecosystems recycle nutrients in the soil. When lightning strikes a tree, it can start a fire that burns dead and decaying matter on the forest floor, releasing nutrients like nitrogen, phosphorus, and potassium back into the soil. These nutrients can then be absorbed by plants and used to fuel new growth. The ash left behind by the fire can also enrich the soil with essential minerals that are beneficial for plant growth.

While wildfires can be destructive and dangerous, they are also a natural part of many ecosystems and can help to maintain their health and diversity. In some cases, wildfires are even intentionally set by land managers to promote ecosystem health and reduce the risk of more dangerous fires in the future.

Therefore, while lightning itself does not directly contribute to nutrient recycling in the soil, it can indirectly do so by starting wildfires that help to maintain healthy ecosystems.

flower structure and functions and cross pollination

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The flower is the reproductive structure of angiosperm and has four main parts: the calyx, corolla, stamens, and pistil. Cross-pollination occurs when pollen from one flower fertilizes the ovules of another flower.

The calyx and corolla protect the reproductive organs and attract pollinators with their colors and fragrance. The stamens produce pollen, which contains the male gametes, and the pistil contains the female reproductive organs, including the ovary, style, and stigma.

The functions of flowers are to attract pollinators, facilitate the transfer of pollen between flowers, and produce seeds for the next generation of plants. Pollinators can be insects, birds, bats, or other animals, and they are attracted to flowers by their colors, fragrance, and nectar. Cross-pollination benefits genetic diversity, which can increase a plant's chances of survival in changing environments. It also allows for the production of hybrid plants with desirable traits.

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The correct question is:

Explain the flower structure, its functions, and cross-pollination.

the function of the caecum is to _/_ _ wastes

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The function of the caecum is to absorb salts and electrolytes and lubricate the solid waste that passes into the large intestine.

The cecum's primary roles are to mix its contents with mucus, a lubricant, and to absorb fluids and salts that are left behind after intestine digestion and absorption are complete. A thick mucous membrane makes up the inside wall of the cecum, through which salts and water are absorbed.

In herbivores, the cecum is a food storage area where bacteria may degrade cellulose. The human cecum no longer serves this purpose (see appendix), therefore in people it only serves as a dead-end pouch that is a portion of the big intestine.

The last part of the body to process food is the large intestine, which receives the undigestible components from the small intestine, absorbs water from it, and excretes the waste material known as feces. The rectum and the anus are the organs that the body uses to release feces.

Therefore, the function of the caecum is to lubricate the wastes.

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please help i need the answers within 10 mins!

Answers

Answer:

You need to make this more understandable

Explanation:

What causes the "rumbling" of thunder?
Lightning strikes in waves, creating multiple rounds of thunder.
The sound waves behave differently within air that is high in humidity.
The sound waves bounce off trees, buildings, and other objects after the lightning is struck.
Thunder bounces off the bottom of the thunderstorm cloud.

Answers

Lightning strikes in waves, creating multiple rounds of thunder.

Explain how an appliance could have a lower wattage than another but still cost more per year for electricity. give examples

Answers

Answer:

An appliance could have a lower wattage than another but still cost more per year for electricity if it’s not well insulated and cycling on more often to keep the interior cold. For instance, a cheap mini fridge may have low wattage, but if it’s not well insulated and cycling on more often to keep the interior cold, your final costs to run it will be higher than a better-designed beverage cooler with excellent insulating properties.

Explanation:

The left atrium receives blood from the

Answers

Answer:

I got you

Explanation:

it receives blood from the heart

One reason cells divide is that: A. organisms must stop the cell cycle. B. cells must decrease their surface area. C. organisms must replace damaged cells. D. cells must increase their volume.​

Answers

Answer: C.
Option C is the correct answer.
Cells divide for many reasons, but a main one is that they need to replace damaged cells. Hope that helps!

A term that can be used to describe a deer is

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Long legged mammals is a term used to describe a deer

Explain what you think makes school enjoyable​

Answers

Answer:

As an AI language model, I don't have personal feelings or emotions. However, based on what I have learned from people, there are several factors that can make school enjoyable:

1. Engaging and inspiring teachers: Teachers who are passionate about their subject and who can make the material interesting and relevant to students can create a positive and enjoyable learning environment.

2. Supportive and inclusive community: Schools that foster a supportive and inclusive community where students feel accepted and valued can create a positive and enjoyable social environment.

3. Variety and flexibility in curriculum: Schools that offer a diverse range of courses and extracurricular activities that cater to the interests and abilities of students can create an enjoyable and enriching learning experience.

4. Opportunities for creativity and self-expression: Schools that encourage creativity and self-expression through art, music, drama, writing, and other forms of expression can help students find joy and fulfillment in their learning.

5. Positive reinforcement and recognition: Schools that recognize and celebrate the achievements and efforts of students can create a positive and enjoyable learning environment that encourages students to continue learning and growing.

Answer:

Facilitating an enjoyable educational experience is crucial for students, as it can foster a lifelong passion for learning. There are several strategies educators can utilize to promote student engagement and enjoyment.
One approach involves integrating diversity and innovation into lesson plans, providing students with the opportunity to personalize assignments and projects under teacher supervision. Another effective technique is to relate educational material to real-world situations, engaging students across multiple intelligences and empowering them to select their preferred learning methods and assessment strategies. Encouraging physical activity and experiential learning, while educating students on the significance of healthy habits and organization, is another powerful tool to promote student engagement.
Finally, creating a welcoming and secure learning environment where students feel free to express themselves is paramount to success. Ultimately, by creating a pleasant learning environment, students are more likely to remain engaged and enthusiastic about education.

Are the following statements a form of Active or Passive Transport?


Gas moves from one corner of a room to be evenly distributed across the whole room

Chlorine Ions are moved from an area of low concentration to high concentration

No ATP is used for transport

Passive Transport
Energy is used

Water moves from an area of low concentration to high concentration


Carrier proteins allow large molecules to move down their concentration gradient


Glucose is allowed to come into the cell with sodium after the cell has used energy to push sodium outside

Answers

Gas moves from one corner of a room to be evenly distributed across the whole room - Passive Transport

Chlorine Ions are moved from an area of low concentration to high concentration - Active Transport

No ATP is used for transport - Passive Transport

Water moves from an area of low concentration to high concentration - Passive Transport

Carrier proteins allow large molecules to move down their concentration gradient - Passive Transport

Glucose is allowed to come into the cell with sodium after the cell has used energy to push sodium outside - Secondary Active Transport (also known as Coupled Transport)

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what is the basic concept behind relative age dating of fossils a the Upper Rock layers were deposited earlier in the Lower Rock layers b the Lower Rock layers were deposited earlier than the Upper Rock layers c the older fossils contain relatively higher levels of radioactive d the younger fossils contain relatively higher levels of radioactive isotopes in the older fossils ​

Answers

The basic concept behind relative age dating of fossils is that the Lower Rock layers were deposited earlier than the Upper Rock layers. This is because the principle of superposition states that in an undisturbed sequence of sedimentary rocks, the oldest rocks are at the bottom, and the youngest rocks are at the top. As a result, fossils found in the lower layers are generally older than those found in the upper layers. This method of dating does not rely on measuring radioactive isotopes or other methods that require absolute dates, but rather on the relative position of the fossils within the layers of rock.

three do you think are the most important and why?

Answers

Answer:

there is nothing there

Explanation:

Which of the following is not a suggested strategy for detecting a communicable disease?

Get tested at a doctor's office for suspected infectious disease.

Investigate the source of exposure to a communicable disease.

OUse a pedigree chart to track the disease through family members.

OUse contact tracing to detect a disease moving through a community.

Answers

The suggested strategy for detecting a communicable disease that is NOT accurate is: Use a pedigree chart to track the disease through family members.

What are the communicable disease?

While a pedigree chart can be useful in understanding the inheritance of genetic diseases, it is not a recommended strategy for detecting a communicable disease.

Therefore, The other options mentioned in the question (getting tested at a doctor's office for suspected infectious disease, investigating the source of exposure to a communicable disease, and using contact tracing to detect a disease moving through a community) are all valid strategies for detecting and controlling the spread of communicable diseases.

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What other process can you think of that is similar to the journey of a signal through the neuron?

Answers

The process that is similar to the journey of a signal through the neuron is is how the information is been transimitted through an electrical wire.

How do you think a signal travels from one neuron to another?

When there is communication between the neurons, the neurotransmitters from one neuron are released,  and this help to attched tothemselves to special molecules  which is regarded asthe receptors.

It shuld be noted that the Receptors receive  as well as process the message which is nee sent to the available next neuron.  howeve rthe Synaptic transmission  srves as one at the synapses by which a chemical signal is released this is  the same as transimiision of electric between wires.

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What name is giving to the bond between water molecules

Answers

It should be hydrogen bonds

2. Animals which share the same space must compete for resources. Which answer is the best example of this?

A. The cattle egret will stay close to grazing animals. When grazing animals move, they stir up insects, which the egret then eats.

B. Some species of orchid look like a female bee. This attracts male bees, who leave pollen so that the orchid can reproduce.

C. Humans cut down forests and built roads in the Florida Everglades. The Florida panthers living there had less territory and their population declined.

D. Rhesus monkeys were released into the wild along Florida's Silver River. The monkeys have adapted to the environment and have lived there for over eighty years.​

Answers

The best example of animals competing for resources is option A. The cattle egret benefits from the presence of grazing animals, as they stir up insects that the egret can then eat. This is an example of commensalism, where one species benefits from the presence of another species without harming or benefiting it. However, it still reflects competition for resources, as multiple species are utilizing the same space and resources (in this case, insects). Option B describes a form of mimicry used for reproduction, while option C describes the negative impact of human activity on a specific species. Option D describes the successful adaptation of a species to a new environment, but it does not involve competition for resources.

QUESTION 2 Why not a Tundra biome?​

Answers

The tundra is the coldest of the biomes. It also receives low amounts of precipitation, making the tundra similar to a desert. Tundra is found in the regions just below the ice caps of the Arctic, extending across North America, to Europe, and Siberia in Asia.

Helpppppppppppppppppppppppp

Answers

what was the question before this, it is asking you to support your claim, what was your claim?

recall the original source of energy for all ecosystems of organism on earth​

Answers

Answer:

3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.

Explanation:

have a nice day.

Genetic engineering definition ​

Answers

Genetic engineering is the process of manipulating an organism's genetic material to alter its traits or characteristics. This can be done by adding, deleting, or changing specific genes within an organism's DNA. Genetic engineering has a wide range of applications, from the development of new medical treatments to the production of genetically modified crops !

Which of the following landforms results from erosion by glaciers and flowing water

Answers

A cirque is a landform that results from erosion by glaciers and flowing water. A cirque is a bowl-shaped hollow that is located at the head of a glacier valley, with a steep back wall and a shallower slope towards the front. Glaciers erode rock by plucking and abrasion, and cirques are formed when the ice plucks out the rock at the head of a valley, leaving a hollow depression. Water from melting glaciers and snow collects in the cirque and may form a lake. Over time, the cirque may erode further, creating a larger basin-shaped valley called a glacier trough.

What is the function of protein
channels in facilitated
diffusion?
A. help large molecules cross the cell
membrane
B. block all molecules from entering the cell
membranes
C. help molecules expand to larger
molecules

Answers

Answer:

A transport protein completely spans the membrane, and allows certain molecules or ions to diffuse across the membrane. Channel proteins, gated channel proteins, and carrier proteins are three types of transport proteins that are involved in facilitated diffusion.

Select all of the choices below that are true about the structure of lipids

Answers

Only third option is right about lipids that
Lipids are hydrophobic however some are hydrophilic

A student was asked to prepare a model of the rock cycle as it moves matter slowly through the Earth. The model shown here has some components not yet identified. Which statements would modify this model to be an accurate representation of the rock cycle? Select all choices that apply.

A Letters C and D should both represent heat and pressure to form metamorphic changes to the rock.Letters C and D should both represent heat and pressure to form metamorphic changes to the rock.
B Letter B should represent burial of material to form sedimentary rock.Letter B should represent burial of material to form sedimentary rock.
C Letter D should represent sedimentation, as layers of deposition create the formation of metamorphic rock.Letter D should represent sedimentation, as layers of deposition create the formation of metamorphic rock.
D Letter A should represent uplift, which brings igneous rock to the surface.Letter A should represent uplift, which brings igneous rock to the surface.
E Letter C should represent volcanic activity, which allows magma to extrude as lava, which cools to form metamorphic rock.

Answers

The correct statements that would modify the given model to be an accurate representation of the rock cycle are:

B) Letter B should represent burial of material to form sedimentary rock.

D) Letter A should represent uplift, which brings igneous rock to the surface.

E) Letter C should represent volcanic activity, which allows magma to extrude as lava, which cools to form igneous rock.

What is the rock cycle?

The rock cycle is a cycle of processes that describes how each of the three main rock types forms and disintegrates as a result of various applications of heat and pressure over time.

Crystallization, metamorphism, and erosion and sedimentation are the three processes that transform one rock into another.

Any rock can change into any other rock by going through one or more of these processes. The rock cycle is a result of this.

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Help me please I will be happy

Answers

Answer:

C. The Earths Core (Center)

Explanation:

I took the test.

Which of the following is MOST closely associated with ecotourism?

A water park in California
Hunting grounds in Argentina
A national rainforest in Puerto Rico
A cruise ship in the Caribbean
A jet ski rental shop in Costa Rica

Answers

A national rainforest in Puerto Rico is MOST closely associated with ecotourism. The correct answer is c).

Ecotourism is a form of tourism that is focused on responsible travel to natural areas that conserves the environment and improves the well-being of local people. The goal of ecotourism is to educate visitors about the natural and cultural heritage of a particular area and to promote conservation efforts.

A national rainforest in Puerto Rico would be an ideal location for ecotourism because it offers visitors the opportunity to explore a unique and diverse ecosystem while also supporting conservation efforts and providing economic benefits to local communities. In contrast, a water park, hunting grounds, cruise ship, or jet ski rental shop may not be focused on responsible travel or conservation efforts and may have negative impacts on the environment and local communities.

Therefore, the correct answer is c) A national rainforest in Puerto Rico.

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DEM
4. In a common breed of sheep, white wool is dominant over black wool, and short care is
the heterozygous(e) condition between long eared (EB) and earless (ee). This is an
example of incomplete dominance. What genotyple ratio will result from a cross
between a white long eared ram and black short eared ewe, if a black short-eared lamb
has already been produced from this mating?
Define alleles (pt)
a. The genotypes of the parents (1pt):
You do not need to do a phenotyple ratio for
b. How many white short-eared sheep would

Answers

The genotypes of the parents must be EB respectively

What is the result of the cross?

Alleles are different gene forms that share the same location on a chromosome and regulate the same trait. An individual can have two alleles (one from each parent) for each gene, and they can be dominant or recessive.

This cross would not produce any white short-eared sheep. Either the long-eared offspring would be white or the short-eared offspring would be black. The cross shows that about 100 of the white short-eared sheep would be produced.

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What is a main difference between a mixture and a pure substance?
OA mixture is only a liquid, but a pure substance can be in any state.
OA mixture looks the same throughout, but a pure substance does not.
A mixture can vary in composition, but a pure substance has a set composition.
OA mixture can be made up of a single compound, but a pure substance cannot.

Answers

Answer:

A mixture can vary in composition, but a pure substance has a set composition.

Explanation:

The main difference between a mixture and a pure substance is that a mixture can vary in composition, but a pure substance has a set composition.

PLEASE ANSWER ASAP THROUGHLY FOR BRAINLIEST

Answers

Based on your instructions, it seems that the purpose of this lab is to investigate the universal law of gravitation through hypothesis and experimentation.

What is the law of gravitation about?

The law of gravitation is a scientific law that describes the force of attraction between two objects with mass. It was first introduced by Sir Isaac Newton in his work "Philosophiæ Naturalis Principia Mathematica" in 1687.

The law states that every object in the universe attracts every other object with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. This force is known as the gravitational force.

Students are expected to observe and record their observations of the Omer system, analyze the data, and draw conclusions about the system's behavior based on the principles of universal gravitation. Ultimately, the goal of this lab is to help students understand the fundamental laws that govern the behavior of celestial bodies in space.

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Read the following passages, and in your own words, type an essay of no less than 125 words on how each man responded to God's guidance and commands. You may use other verses to back up your answer; just stay focused on the topic of "cleansing."Samuel:And Samuel grew, and the LORD was with him, and did let none of his words fall to the ground. (1 Samuel 3:19).David:And David behaved himself wisely in all his ways; and the LORD was with him. (1 Samuel 18:14).Solomon:And Solomon said, Thou hast shewed unto thy servant David my father great mercy, according as he walked before thee in truth, and in righteousness, and in uprightness of heart with thee; and thou hast kept for him this great kindness, that thou hast given him a son to sit on his throne, as it is this day. And now, O LORD my God, thou hast made thy servant king instead of David my father: and I am but a little child: I know not how to go out or come in. 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