One benefit of transboundary Peace Parks in Africa is that border fences will be removed and historic wildlife migrations can resume.
a. true
b. false
Answer: a. true
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Following the Deepwater Horizon accident in the Gulf of Mexico in 2010, bioremediation was used to eliminate much of the oil from the contaminated water. To encourage the growth of oil-degrading microbes, "fertilizer" including iron and nitrogen was added to the water. Which of the following statements regarding the growth of these microbes is incorrect?
A. The oil-degrading microbes used oil (hydrocarbons) as their carbon source. B. The concentration of sulfate in the Gulf of Mexico is sufficient for the growth of oil-degrading microbes. C. Large amounts of iron were needed, as iron is a macronutrient for oil-degrading microbes. D. Nitrogen gas (N2) present in air is not in a form that can be used by oil-degrading microbes.
There is a direct correlation between the level of translation and the length of a poly-A tail
Indicate whether the statement is true or false.
When the result of some genetic condition is a severe medical problem to the individual, it is called
a. an abnormality. b. a disorder. c. a deviation. d. a carrier. e. a pedigree.
How do scientists believe that an asteroid impact in the Yucatan peninsula of Central America caused a worldwide mass extinction?
A. by blocking the sun and inhibiting photosynthesis B. by using up all of the oxygen in the atmosphere C. most of the animals in the world were in the tropics of Central America D. by causing massive floods E. by heating up the planet