The net amount of carbon in the atmosphere between 1750 and 2012 ___________.
Answer:
From 280 ppm to 393 ppm.
Explanation:
In 1750, the amount of carbondioxide in the atmosphere was 280 ppm which increases by 393 ppm in 2012. This is because of the pollution occurs due to industrialization and number of vehicles increased in the world. More carbondioxide gas is released due to the smoke produced from burning of fossil fuels in industries and vehicles. So we can say that pollution is the main reason for increasing carbondioxide concentration in the atmosphere.
5. Explain how interactions and trade with Europeans affected West Africa?
European Exploration Study Guide
Why did European countries compete for power in North America?
Economic—Gold, natural resources, and trade
Religious—Spread Christianity
Competitions for empire and belief in superiority of own culture
What were the obstacles faced by the explorers?
Poor maps and navigational tools
Disease and starvation
Fear of the unknown
Lack of adequate supplies
What were the accomplishments of the explorations?
Exchanged goods and ideas
Improved navigational tools and ships
Claimed territories
What regions of North America were explored and settled by France, England, and Spain?
Spain: Francisco Coronado claimed the Southwest of the present-day United States for Spain.
France: Samuel de Champlain established the French settlement of Québec. Robert La Salle claimed the Mississippi River Valley for France.
England: John Cabot explored eastern Canada.
What regions were explored by Portugal?
The Portuguese made voyages of discovery along the coast of West Africa.
How did the American Indians and Europeans interact with each other?
Spanish
Conquered and enslaved American Indians
Brought Christianity to the New World
Brought European diseases to American Indians
French
Established trading posts
Spread Christian religion
English
Established settlements and claimed ownership of land
Learned farming techniques from American Indians
Traded with American Indians
American Indians
Taught farming techniques to European settlers
Believed that land was to be used and shared but not owned
About how wide are the growth rings for the Rainy years.
Answer:
About 0.6 cm 5.
Explanation:
Old thermometers contained very small amounts of mercury. The mercury in the photo has a melting point of -38°C. What can u conclude about the melting point of the mercury in the old thermometer?
Answer:
The thermometer can not be used to measure very low temperature
Explanation:
Mercury-in-glass thermometer is one of the types of liquid-in-glass thermometers.
Given the very melting point of mercury, it is unsuitable to attempt to use this thermometer for very low temperature measurement.
Hence, from the melting point of mercury, this thermometer can not be used to measure very low temperature.
Ability to be molded. A:density B:plasticity
Which of the following statements regarding the human
population are TRUE? Select TWO.(Remember, there is no
partial credit)
SELECT ALL THAT APPLY
The world's population of humans is
increasing.
In every country, the human population is
increasing.
In some countries, the human population is
decreasing or staying the same.
The world's population of humans is
staying constant
Answer:
The world's population of humans is
increasing.
and
In every country, the human population is
increasing.
How do humans effect the nitrogen cycle?
Answer:
Scientists have determined that humans are disrupting the nitrogen cycle by altering the amount of nitrogen that is stored in the biosphere.
Explanation:
Which of the following is not true of the North American Southwest?
a. It was mainly made up of farming cultures, which were slower to arise in the American
Southwest
b. The North American Southwest included the areas of present-day New Mexico, Colorado,
Arizona, and Utah.
c. They built large-scale irrigation systems and elaborate, multi-storied structures.
d. The Natives of the North American Southwest produced an abundance of basalt sculpture.
Answer:
D
Explanation:
The Natives of the North American Southwest produced an abundance of basalt sculpture.
The Natives of the North American Southwest producing an abundance of basalt sculpture is False.
What is Basalt sculpture?This is defined as the use of the igneous rock known as basalt to carve and shape objects.
The natives of the North American Southwest didn't produce an abundance of basalt sculpture due to lower quantity of basalt in the region which is why option D was chosen.
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What is the exception of chromosome movements
Answer :A chromosome is a long DNA molecule with part or all of the genetic material of an organism. Most eukaryotic chromosomes include packaging proteins called histones which, aided by chaperone proteins, bind to and condense the DNA molecule to maintain its integrity. These chromosomes display a complex three-dimensional structure, which plays a significant role in transcriptional regulation.
Explanation:
3. Which organelle functions in the storage of water and biomolecules? (1 point)
Vacuole
O Cell Wall
O Endoplasmic Reticulum
Chloroplast
Answer:
b
Explanation:
i took the test
Please check
Here’s the first one
Which statement is most supportive of the claim that genetic diversity is an advantage of sexual reproduction?
Genetic variation from sexual reproduction ensures that at least some individuals will have advantageous traits that help them survive.
Asexual reproduction results in the same genes being copied, which means the same vulnerabilities in the population.*******
Sexual reproduction creates genetic diversity, which results in a wide range of appearances in a population.
Lack of genetic diversity from asexual reproduction results in a diminished ability to survive changes to the environment.
What is the most likely explanation for a child exhibiting a heritable trait that neither parent exhibits?
The trait was passed on by a different biological parent, and one of the child's parents is not biologically related.
The trait was inherited from a more distant relative, like a great-grandparent.
The parents carried a second trait that masked the trait of interest.
The trait is recessive, so both parents carry it, and the child inherited each recessive allele.**********
Which statement has exceptions?
Sexual reproduction requires two parents, whereas asexual reproduction requires only one parent.
Sexual reproduction produces genetic variation, but asexual reproduction does not.
Sexual reproduction is more complex, while asexual reproduction is a simpler process.
Sexual reproduction involves parental care, while asexual reproduction does not.******
Assume a bacterial cell failed to replicate its DNA before it reproduced two daughter cells. The reproduction would result in
neither cell containing DNA.
both cells containing DNA.
one cell with DNA and one cell without DNA.*******
one cell with DNA and one cell with two sets of DNA.
A parent bacterial cell is able to survive in the presence of the antibiotic penicillin. Subsequent generations from this parent will be _______ penicillin.(1 point)
resistant to*****
killed by
dependent on
vulnerable to
Hydras are animals related to coral and jellyfish. Hydras can reproduce sexually or asexually. Why would hydras avoid reproducing asexually when conditions are difficult?
The lack of genetic diversity could mean that all of the hydras die, depending on the situation. ******
The high genetic diversity could mean that all of the hydras die, depending on the situation.
Reproducing more rapidly would be a good way to take advantage of plentiful resources.
Reproducing more slowly would be a good way to take advantage of plentiful resources.
Answer:
yeah the first one
Explanation:
just because
A plant that was grown in the dark continuously would: ________.
a. not be able to take in CO2 without sunlight.
b. remain healthy because plants have stored materials in their roots that can provide what the Calvin cycle needs.
c. not be able to split water to provide NADH.
d. continue to photosynthesize because to in carbon dioxide, the only outside input to the Calvin cycle, does not require sunlight.
Answer:
c. not be able to split water to provide NADH.
Explanation:
Photosynthesis, which is the process by which plant species obtain their energy, occurs in two stages viz: light dependent phase and light independent phase. The light dependent phase of photosynthesis requires the energy from sunlight, which is captured by the chlorophyll pigments in the leaves of the plant.
The light energy captured by the chlorophyll is used to split water molecule in a process called PHOTOLYSIS OF WATER. Overall, ATP and NADH (electron donor) are products of the light dependent stage, which enters the next stage to complete the photosynthetic process.
Therefore, a plant that was grown in the dark i.e. no access to light, continuously would not be able to capture light energy and hence not be able to split water to provide NADH.
A plant that was grown in the dark spontaneously would not possess the tendency to split water to provide NADH.
What is photolysis of water?The process by which the species of plant attain their energy, that is, photosynthesis, takes place in two stages:
Light independent phaseLight dependent phaseIn the light dependent phase, energy is needed from sunlight, and is captivated by the chlorophyll pigments present in the leaves of the plant. This energy from the light is used to split the molecule of water by a process known as photolysis of water.
The products of the light dependent stage is ATP and NADH that enters the next phase to complete the process of photosynthesis. Therefore, a plant, which was grown in the dark, that is, having no accessibility to light, would not possess the tendency to captivate the energy from the sunlight and thus would fail to split the molecule of water to provide NADH.
Thus, the correct answer is option c.
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What is the Scientific name for a Rhinoceros?
Answer: Rhinocerotidae
Explanation:
Rhinocerotidae
"A rhinoceros (from Greek rhinokerōs 'nose-horned', from rhis 'nose', and keras 'horn') commonly abbreviated to rhino, is one of any five extant species of odd-toes ungulates in the family of Rhinocerotidae, as well as any of the numerous extinct species therin." -Wikipedia
How does Nitrogen get from the atmosphere to the soil?
Answer:
Plants get their nitrogen indirectly from the air via microorganisms in the soil and in certain plant roots.
Answer:
Microorganisms and certain plant roots in the soil
Explanation:
"Plants get the nitrogen that they need from the soil, where it's already been fixed by bacteria and archaea. Bacteria and archaea in the soil and in the roots of some plants have the ability to convert molecular nitrogen from the air (N2) to ammonia (NH3)... Such organisms are called "diazotrophs". From here, various microorganisms convert ammonia to other nitrogen compounds that are easier for plants to use. In this way, plants get their nitrogen indirectly from the air via microorganisms in the soil and in certain plant roots."
I hope this helps...
process of a structure of a specialized cell.
Answer:
Specialized cells are the cells though they are similar, but cells differ in size, shape and depending upon their function in body.
Example of specialized cells are: Blood cells, Nerve cells, Reproductive cells.
Tissues are made up of specialized cells, those tissues make up organs, organs make up system and systems make up bodies.
If a person is dominant for the trait, does one of their parents have to have the Taster trait?
Answer:
no
Explanation:
True or false consumption efficiency in Huckleberry patches is high like in a forest ecosystem
Answer:
True
Explanation:
12
Select the correct answer from each drop-down menu.
A son and Robert have a search warrant for a suspect's home. They know that if they announce themselves at the suspect's home the suspect
can quickdy destroy evidence. What type of warrant should Allison and Robert request?
Normally search and seizure rules require the
rule. This means that officers must wait a reasonable amount of
time for the occupant to answer. However, based on the situation. Alison and Robert request an)
✓ warrant
allowing them to enter the premises immediately.
Reset
Next
Answer:
Allison and Robert should request a No-Knock Warrant.
Explanation:
A search warrant is a legally binding document that must be acquired by law enforcement officers or investigators before they can open up, enter and search a building. There are various types of search warrants.
Standard search and seize warrants require that law enforcement officers have to identify themselves and allow the occupant a significant amount of time to react. They'd have to knock or ring the doorbell in this situation.
Because law enforcement agents began to see the continued destruction of evidence before they got in, it necessitated the design of another kind of search warrant - the No-Knock Warrant.
By comparison, Allison and Robert will enter the suspect's house violently without advance warning with a No-Knock Warrant, so that if there is any evidence that can be used against the suspect, they will confiscate and protect it to prevent it from being destroyed.
Other types of warrants are:
Warrant to Arrest Warrant for Bench Arrest Warrant for Child Custody etcCheers
PLEASE HELP ME someone help me finish the rest
Answer:
C-Chromosomes
D- DNA
E- Gene
Explanation:
how does the gulf stream affect the air masses above ocean water
Answer:
Locally, particularly off the coast of North Carolina, the Gulf Stream can affect water temperatures, providing warmer ocean waters and balmy days, even in the height of fall and winter.
Explanation:
The Gulf Stream affects the air masses above ocean water by:
Providing the ocean with warmer waters even during cold seasonsThe Gulf Stream is known as the strong current which occurs along the coast of Florida where there are warmer temperatures in the cold seasons and cooler temperatures in the warm seasons.
As a result of this, the Gulf Stream affects the air masses which are above the ocen water by making sure that the weather is more pleasant no matter the season of the year and it has also extended to parts of Europe.
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heat goes from A.larger to smaller objects. b.warmer objects to cooler. c.cooler objects to warmed objects
Answer:
B: warmer objects to cooler
Explanation:
Cooler objects will absorb the heat from any warmer object it comes into contact with.
Assume that plant height is determined by a pair of alleles at each of two loci (A and a, B and b) that are additive in their effects. Further assume that each allele represented by an uppercase letter contributes 6 feet to height and that each allele represented by a lowercase letter contributes 2 foot to height. If a plant with genotype AaBB is crossed to a plant with genotype aaBb, what heights are expected in the progeny
Answer:
16 feet, 20 feet, and 12 feet
Explanation:
Uppercase allele = 6 feet
Lowercase allele = 2 feet
First, let us look at the outcome of the cross between AaBB and aaBb.
AaBB x aaBb
Progeny:
4 AaBB = 6+2+6+6 = 20 feet
4 aaBB = 2+2+6+6 = 16 feet
4 AaBb = 6+2+6+2 = 16 feet
4 aaBb = 2+2+6+2 = 12 feet
The heights expected in the progeny are 16 feet, 20 feet, and 12 feet.
The Rock Cycle
Select the incorrect statements by clicking on the sentences.
ary
гу
LEE
The rock cycle describes the way that rock material cycles through Earth's crust. All
rocks start out as lava or magma that cools into igneous rock. An igneous rock must then
be weathered into sediments for the next stage of the cycle. Sediments are compressed
and cemented to become sedimentary rock. Metamorphic rock forms when rocks are
heated and squeezed deep in Earth's crust. New igneous rock forms when metamorphic
rock is heated so much that it melts into magma, which cools into igneous rock. All rocks
go through this cycle over and over again.
Results
bo...
Cloy
Аа
Language
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Answer:
The rock cycle describes the way that rock material cycles through Earth's crust.
All rocks start out as lava or magma that cools into igneous rock.
Explanation:
The Rock Cycle is a process in Earth's crust of creating and forming different types of rocks. Through this process, three primary rocks are formed: Igneous rock, Sediment rocks, and metamorphic rocks.
From the given statements, the statements which are not true about the rock cycle are:
First one, the rock cycle does not desrcibe the way rock material cycles through Earth's crust but it is a process which creates and transforms different types of rocks.
Second statement is also wrong, because only igneous rocks starts out as lava or magma.
Therefore, statement first and second are not true.
Suppose you want to investigate what kind of material is best for making a warm winter coat. How could you use a freezer, a thermometer, and samples of materials to find an answer?
Answer:
By designing an experiment where the temperature on the thermometer is measured after a chosen (same) time interval when the thermometer is wrapped with the different materials and placed in the freezer
Explanation:
Experimental design
Materials given: freezer, a thermometer, samples of materials
setup:
1. The freezer is put on and made to remain at a particular temperature, mimicking the winter season.
2. Next, different materials for the coat design with equal dimensions are used to rap the thermometer whose initial temperature has been recorded in the same pattern and the thermometer is placed in the freezer and left for a certain time, which is made constant for the different materials.
3. after the time, the final temperature on the thermometer is recorded.
Result interpretation
The temperature is expected to drop after the time in the freezer, but the material with the smaller change (drop) in temperature indicates that it traps more heat hence is the best material for designing a winter coat
independent variables: type of material used
dependent variables: temperature on the thermometer
control variables: time, dimensions of materials, temperature of freezer, pattern of wrapping.
Other than shape, what characteristics are used to identify the various bacterial species?
Answer:
Explanation:
One major characteristic used to identify bacterial species is by Gram staining. This makes bacteria to be classified into two broad classes; Gram positive bacteria (appear purple after stain) and Gram negative bacteria (appear pink after stain).
Another characteristic used is the presence or absence of capsule.
Other characteristics include there motility (which can be due to the presence of flagella), bonding tendency (which can be individually or in pairs) and also pathogenic bacteria can be classified as intracellular or extracellular bacteria.
PLEASE ANSWER I HAVE 5 MINUTES
If a molecule of DNA has 32% guanine before DNA replication occurs, each new
molecule of DNA that is produced following replication will contain what percentage
thymine?
A) 64%
B) 32%
C) 18%
D) 36%
Answer:18%
Explanation:18x2=36 +64=100
Explain why habitats with high biodiversity tends to contain narrow ecological niches and white habitats?
Answer:
because they reduce interspecific competition
Explanation:
Narrower niches are known to be more specific and limited compared to broader niches, which are generally less specific and less limited. The species that live in broad niches are named generalists because they are able to withstand different conditions. A narrow niche is often correlated with reduced overlap and thus tends to reduce interspecific competition. For example, coral reefs consist of a wide variety of species (including anemones, sea sponges, sea fans, brain corals, etc) which have narrow niches, thus showing high biodiversity.
There are several different kinds, but the one you pick doesn't do its job?
the answer to the riddle is a lock.
True or False:
The deletion of a single base in a gene would alter the structure of the gene’s protein more than the substitution of one base for another
Answer:
True
Explanation:
Mutation is any change that occurs to the nucleotide sequence of a gene. Mutations can be of different types including: deletion, insertion, substitution etc.
Deletion mutation refers to the removal of one or more base from the nucleotide sequence while substitution mutation refers to the replacement of one or more nucleotide bases.
DELETION of a single base in a gene would alter the structure of the gene’s protein more than the substitution of one base for another. This is because deletion mutation can cause the reading frame of the nucleotide sequence to change, leading to a SHORTER STRUCTURE of protein.
What are the atomic masses of
protons, neutrons, and electrons?
Answer:
Protons, neutrons, and electrons: Both protons and neutrons have a mass of 1 amu and are found in the nucleus. However, protons have a charge of +1, and neutrons are uncharged. Electrons have a mass of approximately 0 amu, orbit the nucleus, and have a charge of -1.
Explanation:
The nucleus contains protons, neutrons, and electrons, each of which has a mass of 1 amu. Neutrons are uncharged, while protons have a charge of 1.
Thus, Electrons circle the nucleus, having a mass of about 0 amu, and a charge of -1.
Atomic mass of a proton: A proton's atomic mass is about equal to 1.007276 atomic mass units (u), or 1.007276 amu.
Neutron: A neutron has a slightly larger atomic mass than a proton. About 1.008665 u or 1.008665 amu is what it is. Electron: Compared to a proton or neutron, an electron has a substantially lower mass. An electron has a mass of roughly 0.00054858 u or 0.00054858 amu.
Thus, The nucleus contains protons, neutrons, and electrons, each of which has a mass of 1 amu. Neutrons are uncharged, while protons have a charge of 1.
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