GRE Free Practice Test

- (Topic 2)
Exhibit.

1. A. Quantity A is greater.
2. B. Quantity B is greater.
3. C. The two quantities are equal.
4. D. The relationship cannot be determined from the information given.

Correct Answer: C

- (Topic 3)
Normally, seeds of Emmenathe penduliflora stay dormant for years and germinate only when a fire burns through their habitat. Nitrogen dioxide in the smoke induces the seeds to germinate. Fires clear the brush, allowing germinating seeds to receive the sunlight they need to grow. The plants mature quickly, produce seeds, and then die. In areas with heavy automobile traffic, however, the seed germinates in the absence of lire, with automobile exhaust supplying the required nitrogen dioxide.
The information given, if accurate, most strongly supports which of the following hypotheses?

1. A. Fires in the habitat of £. pendulijlora do not entirely destroy the plant's seeds even in the places where the fires burn most intensely.
2. B. The nitrogen dioxide in automobile exhaust eannot harm plants of
3. C. pendulijlora after germination.
4. D. If human intervention decreases the number of fires in the habitat of
5. E. pendulijlor
6. F. automobile exhaust can replicate the conditions the plant requires in order to thrive.
7. G. Within the habitat of
8. H. pendulijlora . natural fires are significantly more frequent in areas with heavy automobile traffic than they are in other areas.
9. I. Unless
10. J. pendulijlora seeds that have germinated can survive in the shade, automobile exhaust threatens the long-term survival of the plant in areas with heavy automobile traffic.

Correct Answer: C

- (Topic 2)

1. A. Quantity A is greater.
2. B. Quantity B is greater.
3. C. The two quantities are equal.
4. D. The relationship cannot be determined from the information given.

Correct Answer: C

- (Topic 2)
At a grocery store. Joe bought n bottles of a certain shampoo for a total price of SI 2.00. At a drugstore, Ann bought In bottles of the same shampoo for a total price of $16.00.

1. A. Quantity A is greater.
2. B. Quantity B is greater.
3. C. The two quantities are equaled.
4. D. The relationship cannot be determined from the information given.

Correct Answer: B

- (Topic 3)
In the present climate about half the atmospheric greenhouse effect comes from water vapor, about a quarter from clouds, and a fifth from carbon dioxide. According to Vallis. these numbers are necessarily) (i) _____ because the effects of the greenhouse gases are not always (ii) _____ . If the atmosphere is dry. then adding CO^ makes a big difference to the greenhouse effect, but if there is a large amount of water vapor in the atmosphere already producing a greenhouse effect, then adding CO (iii) _____ .

1. A. exaggerated
2. B. conservative
3. C. approximate
4. D. benign
5. E. cumulative
6. F. disputed
7. G. poses a threat
8. H. has less impact
9. I. becomes more difficult

Correct Answer: AEG