Question

c. they have even taken to living around electric power plants.
d. they are the only marine mammals that are herbivores.

1. which sentence is written using a description structure?

a. their tails are very large and flat.
b. christopher columbus entered the first - recorded sighting of a manatee in 1492.
c. killing manatees was taboo.
d. there are laws made to protect the manatee, including marked conservation zones.

1. which sentence includes a cause - and - effect signal word?

a. if the water they live in gets too cold, they develop cold stress syndrome.
b. they have even taken to living around electric power plants.
c. they are migratory, however, and can be found as far north as massachusetts.
d. they have thick, wrinkled, gray, almost hairless skin.

1. which sentence uses contrast words to show difference?

a. they actually look a lot like walruses, but are in fact most closely related to elephants.
b. they are the only marine mammals that are herbivores.
c. they are rather peculiar in appearance.
d. they must eat at least one tenth of their body weight to maintain their body temperature.

Explanation:

1. A description - structure sentence details the physical or other characteristics of a subject. Option A describes the tails of manatees as large and flat.
2. A cause - and - effect signal word shows a relationship between a cause and its effect. In option B, "if the water gets too cold" is the cause and "they develop cold stress syndrome" is the effect.
3. Contrast words are used to show differences. Option A uses "actually" and implies a contrast between how manatees look and what one might expect, comparing them to walruses.

Answer:

1. A. Their tails are very large and flat.
2. B. If the water they live in gets too cold, they develop cold stress syndrome.
3. A. They actually look a lot like walruses, but are in fact most closely related to elephants.