They form memory cells in which those cells remember the same pathogen for faster antibody production, in aid of future infections.
Answer:
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Answer:
my guess would be D
Explanation:
It could be C too, but I think D is a better answer
Explanation:
At one end of a contour the slope of the land will always be steeper than at the other. Thus when plowing parallel runs paralleling any contour the plow furrows soon deviate from a true contour. Rain water in these furrows will thus flow sideways along the falling "contour" line.
the respiration rate will increase as temperature increases. An increase in temperature will minimize the amount of dissolved oxygen in the water and increase the metabolic rate of the goldfish, thus causing the goldfish's respiration rate to increase (“Hot waters make it hard for fish to breathe”).