What if all the cats in the world suddenly died?
i am being very serious as they're in fact vital members of the global ecosystem.

Which feature of a human community is similar to a niche in a biological community

All ova contain sex chromosomes corresponding to: x y xx xy

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.