2. What typically happens to a species that begins to vary and forms two distinct species?
(a) One of the species will become extinct.
(b) They will be classified as sub-species.
(c) They will require more resources.
(d) They will inhabit more area.

3. What do naturalists connect with species that have two or three variations?
(a) Intermediate generations.
(b) Fossil records.
(c) Future generations.
(d) Past generations.

4. What tends to occur in large groups of genera?
(a) They divide into smaller groups.
(b) They live over large areas.
(c) They become varieties.
(d) They never inter-breed.

5. What is one geographical change that affects islands and continents?
(a) Sea level changes.
(b) Rainfall changes.
(c) Climate changes.
(d) Animal variations.

6. What typically happens when varieties are inter-breed?
(a) Offspring are weaker.
(b) Variations increase.
(c) Offspring are stronger.
(d) Variations die out.

7. What do Naturalists suggest is one definite distinction between a species and a variety?
(a) Life span.
(b) Geographical range.
(c) Domestication.
(d) Size of groups.

8. What results as a climate becomes more hostile?
(a) Fewer species.
(b) More competition.
(c) Less food.
(d) Better cooperation between species.

9. Where did Darwin's ship travel?
(a) England.
(b) South America.
(c) North America.
(d) Asia.

10. Which of the following is a radical change in the structure or behavior of an organism?
(a) Increased illness.
(b) Growth.
(c) Extinction.
(d) Monstrosities.

11. Why do domestic ducks have lighter wings and heavier feet then wild ducks?
(a) Different species.
(b) Domestic ducks walk less.
(c) This is a false statement.
(d) Domestic ducks walk more.

12. What is the difference between the two types of variations discussed in Chapter 1: Variation Under Domestication?
(a) Location of variation.
(b) Degree of variation.
(c) The area affected by the variation.
(d) The species that variations happen to.

13. Which of the following occurs when one type of variation causes variation in another part of an organism?
(a) Misallocation of variation.
(b) Mulitvariation.
(c) Correlation of growth.
(d) Normal variation.

14. What do naturalists call a situation where a child takes on characteristics NOT shared by the parents?
(a) Adopted.
(b) Extroverted.
(c) Reverted.
(d) Introverted.

15. What would increase the likelihood of variations occurring in a given population?
(a) Domestication.
(b) Dramatic environmental changes.
(c) Increase in available food.
(d) Fewer members of the species to compete with.