science question help?

Answer:

These movements enable food to progress along the digestive tract while, at the same time, ensuring the absorption of the important nutrients. Techniques of measuring these movements of the gut enable us to recognize the normal patterns of contraction in each of the regions

Explanation:

Answer:

The theory of spontaneous generation suggested that the living organisms can come from inanimate objects, however, it is an obsolete theory that is disproved by many experiments. The very first experiment that disapproved it was the experiment by Francesco Redi in 1668.

He demonstrated that maggots come from the eggs of flies instead of rotting meat. He placed raw meat inside of every jar. Half the jars he left open and the other half, he covered with mesh. In open jars, he found maggots after some time but covered jars have no maggots. That proved that the maggots come from eggs of flies rather than rotten meat.

The presence of flies on the meat is responsible for the production of maggots in meat.

This experiment disproves the theory of spontaneous generation because maggots are produced from the flies not the rotten meat. According to spontaneous generation, living organisms are formed or develop from nonliving matter.

So by performing this experiment we can see that maggots are formed when the flies feed on the rotten meat otherwise no maggots are present if the flies are not present there so that's why we can conclude that this experiment rejects the theory of spontaneous generation.

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Answer:

space shuttle program

Answer:

Many farmers and gardeners compost their plant and animal waste. The living material naturally decays in compost bins, forming a dirt-like substance that's rich in nutrients. ... This fertiliser caused his plants to grow faster and taller than they grew in unfertilised soil, artificial fertiliser provides lacking minerals which also speeds up growth, it depends on the richness of minerals in the compost and the quality of artificial fertiliser

Polar bears and seals are animals that share a prey-predator relationship, whereas climate change causes less biomass at the quaternary level.

The prey-predator relationship is s type of ecological association where one species is hunted (the prey) by another species.

Moreover, climate change is well known to produce global warming and melting ice on the Earth's poles.

In conclusion, polar bears and seals are animals that share a prey-predator relationship, whereas climate change causes less biomass at the quaternary level.

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Answer:

Algae are single celled aquatic plants that need sunlight, food and carbon dioxide in order to thrive. So, the two elements that algae thrives on are nutrients and warm temperatures.

Explanation:

Answer:

The inability of our body to sweat, as it does not have enough energy to cause sweating. The muscular contraction caused by the cold, particularly of the bladder, which causes the production of more urine.

Answer:

Translation of genetic code for protein formation

Explanation:

Answer: Translation

Explanation: trust me I got it correct

Answer:

Nervo óptico

Explanation:

responsável por dar ao ser humano a capacidade de ver e processar informações visuais rapidamente quando totalmente desenvolvido

Answer:

Optical nerve.

Explanation:

The point called where the retina is connected to the eye is called the Optical Nerve.

Myofibrillar proteins in muscle would be the most affected by limited nitrogen.

Proteins are essential biomolecules composed of linear sequences of building blocks called amino acids.

The amino acids are composed of nitrogen (N), carbon (C), hydrogen (H) and oxygen (O), and often also sulfur (S).

Nitrogen is, therefore, a fundamental component of all amino acids, which form proteins such as enzymes, peptide hormones, etc.

In conclusion, myofibrillar proteins in muscle would be the most affected by limited nitrogen.

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Answer: A . she was able to represent something small in a larger way .

Answer:

humans use their knowledge to locate resources.

Explanation:

The carrying capacity can be defined as the maximum number of individuals in a population of a species that an ecosystem or region can support on the basis of availability of water, food, habitat and other needs necessary for survival. Sometimes, the population of the species increases exponentially exceeding the carrying capacity of an ecosystem when the resources available are surplus.  

The human populations are not limited by the carrying capacity of their ecosystem this is because of the fact human beings possess special intellectual and thinking abilities which make them capable of availing themselves resources. They posses knowledge which allows them to search, and find resources even from the earth extreme locations not suitable for survival.

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Answer:

c

Explanation:

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The presence of cosmic microwave background radiation is evidence for the Big Bang theory given by scientists. The correct option is D.

The Big Bang theory exemplifies how the universe came into existence from a high density and temperature starting point.

It is the dominant cosmological model that explains the evolution of the observable universe from its earliest known periods to its subsequent large-scale form.

According to scientists, the universe should be filled with radiation that is literally the remnant heat from the Big Bang, which is known as the "cosmic microwave background," or CMB.

Thus, the correct option is D.

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Answer:

Seeds are not gametes.

Explanation:

Microsporophyll is a male gamete.

Macrosporophyll is a female gamete.

Answer:

False

Explanation:

Pollen is the male gamete in plants

Answer:

C

Explanation:

Hornworts has only one chloroplast

Answer:

Sugar

Explanation:

Photosynthesis is a process that certain organisms undergo. Plants, algae, and certain bacteria use this process to produce their own food. These organisms are called producers or autotrophs.

The equation for photosynthesis is:

carbon dioxide + water + light energy —-> glucose + oxygen

The plants turn carbon dioxide, water, and light energy from the sun into glucose and oxygen. The glucose, or sugar, becomes the food for the plant. The oxygen is the waste product.

The question asks us what is produced during photosynthesis.

Chloroplasts are not produced, but they are where photosynthesis takes place. Carbon dioxide is not produced, but it is used in the process. The correct answer is sugar. Sugar is produced, and it is the food for the organism.

Answer:

From solutions that evaporate

Explanation:

Minerals can form in different ways. According to the question, minerals crystallize from a material dissolved in water when the solution evaporates. When a material dissolves in water, it forms a solution i.e. water + dissolved material.

The element constituents of the solution can aggregate to form a solid mineral, which will be left to crystallize when the solution undergoes evaporation i.e. liquid changes to gas. A very good example is when salt dissolves in water to form a salt water solution. When the water of this solution evaporates, salt crystals are left, which can crystallize to form minerals.

Answer:

From solutions that evaporate

Explanation:

Answer:

The answer is D. I am telling you this because i got it correct on the quiz, 90%. Not to brag.

Explanation:

Which part of the neuron below is indicated by the arrow, and what is its function?

The dendrites carry the electrical impulses from the signal receivers to the cell body.

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A neuron is the structural and functional unit of the nervous system.

Schwann cells form the myelin sheath around the neurons of the peripheral nervous system while oligodendrocytes in the central nervous system.

It creates an insulation layer and helps in the quick transmission of impulses.

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Answer:

if a point mutation does not change the amino acid, it's called a SILENT mutation.

Explanation:

Answer:

sepals aka calyx

Explanation:

sapelis lowest part on flowers which covers the flower and from which pedicel is produced.

There are 28 radio antenna, which are essentially satellite dishes. Only 27 are in operation at any given time, leaving one to sit out for maintenance. Astronomers using this array were able to observe black holes, and also observe the formation of interplanetary disks, among many other applications as well.

The reason why so many dishes are used is to increase the faint signal that is received from such a long distance away (often lightyears away). The 27 dishes are effectively the same as having a single radio dish that is 36 km (22 miles) in diameter. Having such a impossibly massive satellite dish is not feasible, so it's more practical to go with 27 smaller dishes.

Answer:

B.

Explanation:

The primary environmental effects of mining are on the habitats for wildlife and fisheries, the water cycle, regional temperatures and rainfall patterns, sedimentation, forest loss, and ecological disruption. Thus, option B is correct.

The effects of mining on the environment include soil, groundwater, and surface water contamination from chemicals produced during mining operations, erosion, sinkhole development, biodiversity loss, and sinkholes.

Mineral extraction from the environment frequently results in imbalances that are harmful to the environment.

Loss of vegetation cover, widespread water body degradation, biodiversity loss, altered land use, increasing social vices and conflicts, high cost of living, and air pollution are some of the negative effects of mining.

Therefore, Because minerals are within the Earth's surface, extraction causes destruction.

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Answer:

The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged). Atoms have different properties based on the arrangement and number of their basic particles.

PLEASE REFER TO MY IMAGE LABELED BELOW TO HELP YOU UNDERSTAND MORE.

HOPE IT HELPS : D

Explanation:

Answer:

D. The lion population is more likely to survive because it is more likely to have individuals with traits to combat the virus.

Explanation:

Since lions have greater genetic diversity it is likely that there's one or two lions that have a trait to resist or kill the virus thus won't be infected, whereas, since cheetah's have low genetic diversity and low population size it is likely that they have little to no chance to surviving this virus attack since the genetic makeup is similar among the members of cheetah species.

Answer:

d

Explanation:

plato

Answer: these are the diffrent types of food preservation methods as you see pickling or storing is the shortest or fermeting

Freeze-drying – 10 years to 15 years (or more)

Drying or Dehydrating – 5 to 10 years for fruits and vegetables

Canning – 12 months to 3 years using hot water/pressure canning

Salting (corning, brining) – in the one year range (depending)

Fermenting – also in the one year range (depending)

Freezing – 8 months to 12 months  

Pickling – 5 months to 6 months

Storing – a few weeks to a few months

Explanation:

Answer:

evaporation and transpiration

Explanation:

The water eventually is released to the atmosphere as vapor via the plant's stomata — tiny, closeable, pore-like structures on the surfaces of leaves. Overall, this uptake of water at the roots, transport of water through plant tissues, and release of vapor by leaves is known as transpiration

Answer:

Thomas Hunt Morgan continues on with the genetic research which is of Gregor Mendel but according to research Morgan used fruit flies.

Explanation:

Hypothesis is termed as an explanation which is being proposed for a phenomenon. There is a difference which is between scientific theory and scientific hypothesis.

I couldn't see ur picture But I think from the options I think the answer is option D

D) organisms are made up of large number of cells

The feature of cell theory that is best demonstrated in the image is organisms are made up of a large number of cells. Thus, the correct option for this question is D.

The cell theory was proposed by two famous scientists. i.e. M.J. Schleiden and T. Schwann. There are three assumptions that fall under the cell theory.

Cell theory was further refined by German biologist Rudolf Virchow in 1855. According to him, all cells are arising from pre-existing cells.

According to the three assumptions given above, the one which is best demonstrated by the image is that Organisms are made up of a large number of cells.

Therefore, the correct option for this question is D.

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