True. Think if ice cubes in the freezer. They shrink due to sublimation. <span />
Answer:
20
Explanation:
gametes have half the amount
Primary succession occurs in areas without life, while secondary succession occurs in places that were previously inhabitated.
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The correct answer is that "the T cell enters a state of anergy".
The activation of T cells requires two signals: (1) antigen specific signal presented by an antigen presenting cell (either a macrophage or a dendritic cell) that activates t cell receptors and (2) co-stimulatory signals that is not antigen specific but rather found in the plasma membrane of the antigen presenting cell (i.e. CD28). In the absence of a co-stimulatory signal, the t cell will enter a state of anergy or the inability to produce an immune response toward an offending antigen.
Long chains of amino acids used for building, repair, and maintenance.
