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The main goal is to move substance across the cell membrane. There is one main difference between facilitated diffusion and active transport. ... With active transport, the protein changes shape by using ATP. Energy is needed in this form of transport because the substances are going against the concentration gradient.
Answer:
Paraphrasing involves taking a passage - either spoken or written - and rewording it. Basically, you are writing something in your own words that still expresses the original idea. ... Paraphrasing is common when writing an essay or research paper.
a. redwood trees. K-selected species are living organisms that tend to be larger than those in the r-selected species. They also have relatively stable population and live longer, but produce relatively fewer number of offspring. Redwood trees are the biggest and tallest trees in the planet; they can live up to a thousand years.