two factors that determine range are,
in constant flux as abiotic and biotic
factors change overtime Abiotic factors - temperature, rainfall, the presence
of geographical structures like mountains and oceans, and large scale ongoing
and historical process such as continental drift Biotic factors - past and
current presence of other species that provide habitat, food, or competition Ranges
are dynamic
Hello.
The answer is
<span>B.They help produce plasma cells.
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