The laws related to sperm donation and surrogacy are the same in each state in the US
a. True
b. False
Indicate whether the statement is true or false
False
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An element or molecule that has an essential role in an organism's growth and survival is defined as a(n) ________
a. vitamin b. ion c. compound d. nutrient
Infectious disease and parasites that affect population size are ____
a. carrying capacities b. replacement factors c. density-dependent controls d. density-limiting controls e. density-independent controls
There are tubeworms and clams that live at the bottom of the ocean near thermal vents that do not have direct access to sunlight so they derive their energy from
A. sources not yet known. B. the sun by way of burning fossil fuels like we do with coal and oil. C. the sun, but they are deep in the dark ocean and live off dead detritus that sink to them. D. chemosynthetic bacteria.
Choose the one most appropriate answer for each.
A. Primary productivity B. Bicarbonate C. Food chain D. Net primary production E. Biogeochemical cycles F. Detritus