Question

Carbon gives rise to so many different kinds of molecules because it does which of the following?

	It is one of the most abundant element on Earth.
	It is able to form bonds with itself and many other elements.

	It is chemically inert.
	It is electrically neutral.

Question 36 pts

(TCO 6) A reaction that releases energy as it occurs is classified as _____.

	catalyzed
	exothermic

	endothermic
	oxidation-reduction

Question 46 pts

(TCO 6) A population of beetles in which some individuals are blue and some individuals are green evolves because the green individuals survive better and leave more offspring. This mechanism of evolution is known as _____.

	natural selection
	genetic drift

	mutation pressure
	migration

Question 56 pts

(TCO 6) Which of the following statements is the best prediction based on the hypothesis that bird species have decreased in number in a particular wetland because of construction traffic?

	If a wetland area is disturbed by construction vehicles, then the number of bird species will decrease.
	If bird numbers decrease in a wetland, then construction vehicles must have affected the environment.

	If construction vehicles enter a wetland, then new predators will enter the area and reduce the size of bird populations.
	If construction vehicles are in a wetland area, then the environment will be damaged such that it can no longer support most bird species.

Question 66 pts

(TCO 6) A reduction in which of the following would have the greatest effect on reducing outdoor air pollution?

	Automobile use and industrial purposes
	Power plant emissions

	Cigarette smoking
	Use of aerosol cans

Question 76 pts

(TCO 6) What is the most significant source of sulfur dioxide emissions into the atmosphere?

	Coal-burning power plants
	Automobiles

	Sewage treatment plants
	Refuse dumps

Answer 1

Q.1. Carbon gives rise to so many different kinds of molecules because it is able to form bonds with itself and many other elements.

Q. 2. A reaction that releases energy as it occurs is classified as exothermic.

Q. 3. This is called natural selection.

Q. 4. If construction vehicles are in a wetland area, then the environment will be damaged such that it can no longer support most bird species.

Q. 5. Automobile use and industrial purposes

Q. 6. Most significant source of sulfur dioxide emissions into the atmosphere is automobiles.