Which situation can be identified by a biodiversity study of an area?
A.
A currently undetected invasive species will invade the ecosystem.
B.
The decline of a shrub species is caused by an increase in an herbivore population.
C.
A flood is likely to hit the area very soon.
D.
The ecosystem will expand its geographical range in the next 50 years.
E.
An animal species is experiencing altered reproductive function.

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.