Soil horizons are very consistent across the world; most places will have the same number
of layers with similar composition.
TRUE
FALSE

Identify the missing parts of the carbon cycle

Drag each label to the correct location on the chart. match the function to the type of tissue

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.