1 9.3.2 Quiz: Variation and Adaptation Question 1 of 10
Why are certain traits adaptations in one ecosystem, but not in another?
A. Ecosystems can have different conditions.
B. Organisms can learn new adaptations.
C. All ecosystems have the same amount of competition.
D. Organisms lose adaptations when they migrate.

where is the scientific experiment?

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.

what in the weirdo : o