Louis pasteur was the final scientist to settle the question of spontaneous generation and biogenesis by designing an experiment that boiled the broth isolating the one factor designing a controlled experiment that exposed the boiled broth to air with an s shaped curve isolating the broth by sealing the flasks designed an experiment where the broth was not boiled but still exposed to the air.

Explain the process that creates the heat of the sun?

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.

Which of these outcomes is a negative impact of postindustrial societies on the environment? a. nomadic ways b. overpopulation c. overgrazing d. resource renewal