Where do the plants come from during succession?

Why Eventually seeds that were buried hundreds
of miles below Earth's crust will work their
way to the surface over thousands of
years, and sprout.

The wind blows seeds great distances, seed
pods float down streams, animals also eat
fruits and vegetables depositing those seeds
when they poop.

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.