Why do many marine pollution experts consider oil to be among the least damaging pollutants introduced into the ocean?
What will be an ideal response?
Hydrocarbons are organic substances, so they can be broken down, or biodegraded, by microorganisms. The oil dissipates and breaks down, becoming food for various microbes.
Some natural undersea oil seeps have occurred for millions of years, and the ocean ecosystem seems unaffected—or even enhanced—by them (because oil is a source of energy). Other types of pollutants last far longer and can do much more damage than an oil spill.
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At the time of Pangaea, South America and Africa were attached, forming a continuous landmass. Using Figure 19.2, describe what transpired in the past 225 million years to position the two continents where they are today.
What will be an ideal response?
As a storm grows from a tropical depression to a Category ? hurricane, how
do the surface pressure and the wind speed change? What will be an ideal response?
Describe the association between prolonged intense episodes of heat and air pollution and the possible effects it has on human health
A rainforest can best be described as a:
a. jungle. b. selva. c. tropical savanna. d. woods.