can you tell from this tree whether C a position 15 evolved before or after T at position 15? Explain.

they are known to reach a speed of 21 miles per hour

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation:

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.