q: The most advantageous type of reproduction can be chosen when generational what is used?
Options:
- (A) Plants growth
- (B) alternation
- (C) competition
- (D) Chemical energy
- (E) A computer
- (F) colors
- (G) Energy.
- (H) Energy
a: (B)... Explanation: Alternation of generations allows for both asexual and sexual reproduction. Advantages and disadvantages of sexual as opposed to asexual means of reproduction. Alternation of generations allows for using the most advantageous type of reproduction. That's why the answer is (B).

q: Why can amphibians easily absorb toxins?
Options:
- (A) salamanders
- (B) permeable skin
- (C) hydrate their cells
- (D) it needs them
- (E) poisonous frogs
- (F) Pesticides
- (G) cold blooded
- (H) bending light rays
a: (B)... Explanation: Amphibians have permeable skin that easily absorbs substances from the environment. Natural Toxins Toxins are poisonous substances from bacterias, plants or animals. Amphibians have permeable skin that can easily absorb toxins from bacterias, plants or animals. That's why the answer is (B).

q: Where do dogs store energy?
Options:
- (A) Something coming from a gland
- (B) saturated fatty acids
- (C) Earth orbiting the Sun
- (D) the environment
- (E) Slowing the transfer of heat
- (F) an organism's body
- (G) it keeps an organism warm
- (H) it helps plants in growing
a: (B)... Explanation: Animals use saturated fatty acids to store energy. All dogs are animals . Dogs use saturated fatty acids to store energy. That's why the answer is (B).

q: What clusters around the heat of submarine volcanoes?
Options:
- (A) ferns
- (B) organisms
- (C) vegetation
- (D) humans
- (E) emissions
- (F) Energy
- (G) insects
- (H) the sun
a:
(B)... Explanation: Organisms cluster around hydrothermal vents in the ocean floor. Hydrothermal vents are powered by the heat of submarine volcanoes. Organisms cluster around the heat of submarine volcanoes. That's why the answer is (B).