A keystone species is the most numerous species in an ecosystem
Indicate whether the statement is true or false
FALSE
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In models of logistic population growth, _____
A) the population growth rate slows dramatically as N approaches K B) new individuals are added to the population most rapidly at the beginning of the population's growth C) new individuals are added to the population as N approaches K D) only density-dependent factors affect the rate of population growth E) carrying capacity is never reached
Sue was monitoring the oil spill into the Gulf of Mexico from an oil tanker. From her observations, she noted that the oil was moving as large patches in the water. It did not appear as though the oil was dissolving into the water. Why did the oil not dissolve into the water?
A. Hydrophobic interactions B. Surface tension C. Sea water acts as a solvent D. Water forms hydration shells E. Water has a high heat of vaporization
What does Arthropod mean?
a. Multiple legs b. Ten footed c. Different stages of development d. Hard external skeleton e. Jointed leg
Pellagra is a deficiency disease related to which of
the following vitamins? a. A b. B1 (thiamine) c. C (ascorbic acid) d. B2 (riboflavin) e. B6 (niacin)