dromedary, camel, alpaca, vicuña, guanaco, llama, which species are most similar to each other? what is this about?

Alpaca and llama are the most similar

Explanation:

An alpaca is a mix of a donkey and llama so alpaca and llama are the most similar.

some of your causes might be acidic rain or natural wildfires that cause the parks to be degraded

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many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.