Ques and Ans: What ccurs when many muscles contract a little bit all at once?
Options:
- (A) heat production
- (B) heat loss
- (C) sweating
- (D) permineralization
- (E) hypothermia
- (F) resistance
- (G) cramping
- (H) heat energy
(A)
Logic for the answer: Shivering occurs when many muscles contract a little bit all at once. Heat production is increased by shivering and non-shivering thermogenesis . Heat production occurs when many muscles contract a little bit all at once.

Ques and Ans: What animal must adapt to salt water?
Options:
- (A) fur seals
- (B) warm-blooded
- (C) allow growth
- (D) alpacas
- (E) honeybees
- (F) Sea tiger.
- (G) animals
- (H) to stay warm
(F)
Logic for the answer: Organisms that live in marine biomes must be adapted to the salt in the water. Another animal that lives within the Marine Biome is a sea tiger. Sea tigers must adapt to the salt in the water.

Ques and Ans: Where do streams often get h20?
Options:
- (A) perspiration
- (B) at or near the margins
- (C) raising their temperature
- (D) the landscape
- (E) seeping out of a spring
- (F) cloudy and rainy weather
- (G) Inches or fractions of inches.
- (H) precipitation
(E)
Logic for the answer: Streams may start with runoff or water seeping out of a spring. Water is everywhere H20. Streams often start with runoff or H20 seeping out of a spring.

Ques and Ans: Trees have woody stems covered with what?
Options:
- (A) heat energy
- (B) thin skin
- (C) protective skin
- (D) skinny cells
- (E) white skin
- (F) Chlorophyll
- (G) Organic compounds
- (H) looseness
(C)
Logic for the answer:
Trees have woody stems covered with bark. On the outside is a protective skin of bark made mainly of cork. Trees have woody stems covered with protective skin.