Which of the following can be said about the use of agriculture
a. it prohibited the use of machinery.
b. it has included practices that led to pollution of soil and water.
c. it bears no effect on the environment.
d. it stunted the growth of civilization and development.

What heat is removed how does a gas become a liquid

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.

What type of bonds link individual amino acids together?