Which of the following is a pattern of biography that supports the theory of evolution?
a. analogous structures show that living in similar habitats doesn't lead to similar adaptations.
b. closely related organisms that live in different environments are often very different from eachother.
c. closely related organisms that live in different environments don't show any different adaptations.
d. analogous structures show common descent for unrelated species.

What would be the most likely result if the ph of the stomach were increased to 5

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient

Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.