What would we need to start a colony on Mars? My ideas are soil, trees, and plants, water, those plant heat lamps, airtight domes, solar panels, and rocket fuel.
Any more stuff we need to pack???
(I mean global warming and all)

What are the proteins in connectivity tissues of your foot examples of?

What are 3 reasons that natural selection occurs

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.