<span>ctabolism is the process in which complex molecules are broken down into simple ones.</span>
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The fish did not yet exist when the old layers of rocks were deposited. In fact, animals with hard parts did not evolve until about 600 million years ago, which is only about 13% of the 4.5 billion year age of the Earth. Multicellular animals without hard parts left tracks in older sediments, but had no fossilize-able body parts.
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Answer:
Plants obtain water through their roots. ... The water passes through the membranes of plant cells and also fills the spaces in between the cells. Because the cells absorb the water directly, the soil must be in contact with the roots in order for the roots to absorb the water.
Answer:
Limiting variables include a low supply of food and lack of room. Limiting variables may reduce birth rates, increase death rates, or contribute to emigration. Limiting factors determine a population's carrying capacity. Recall that the population grows exponentially when there are no limiting factors.
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