Some of these receptors bind to antigens in the blood. The
antigen are then endocytosed and identified. Some of the receptors such as the MHC II are
used in antigen-presentation. They display the antigen for identification and
activation of other lymphocytes.
10 (D) because the scale does not effect how many boulders there are.
Pretty sure it is A. Like a sample population
No, it's because the gases are being heated. Gases expand when heated, and that's what you'd be seeing.
Glucose <span>from photosythesis produces the vast majority of chemical energy to living things</span>
