Ques and Ans: Organisms rely on a relatively narrow range of what?
Options:
- (A) Decibels
- (B) water
- (C) food
- (D) relativity
- (E) acidity
- (F) spectrum
- (G) balance
- (H) Light
(E)
Explanation for the Ans above: [[All life relies on a relatively narrow range of pH, or acidity. All organisms have a life-span. Organisms rely on a relatively narrow range of acidity.]]

Ques and Ans: Abalone is an example of an animal that:
Options:
- (A) refract or absorb.
- (B) They have webbed feet
- (C) important habitats
- (D) Plant growth is reduced
- (E) it keeps an organism warm
- (F) reproduces sexually
- (G) decreases its bodily water
- (H) four limbs
(F)
Explanation for the Ans above: [[Mollusks reproduce sexually. An abalone is a shellfish or mollusk. Abalone reproduce sexually.]]

Ques and Ans: What obtain their food from plants and cannot make their own food?
Options:
- (A) bacteria
- (B) Flowers
- (C) trees
- (D) lichen
- (E) animals
- (F) fungi
- (G) humans
- (H) grass
(E)
Explanation for the Ans above:
[[Heterotrophs are living things that cannot make their own food. All animals are heterotrophic and obtain their food from plants. Animals obtain their food from plants and cannot make their own food.]]