q: What process helps provide resources for producers to create food?
Options:
- (A) animals
- (B) Exfoliation
- (C) decomposition
- (D) mastication
- (E) recycling
- (F) reproduction
- (G) ejaculation
- (H) Converting waste.
a: (C)... Explanation: Producers use energy and inorganic molecules to make food. Decomposition is the breakdown of organic molecules into inorganic molecules. Decomposition provides resources for producers to create food. That's why the answer is (C).

q: Where is the name of a habitat where a variety of ocean organisms often seek food and shelter?
Options:
- (A) gastropod shells
- (B) body water
- (C) seaweed
- (D) more abundant
- (E) whale
- (F) coastlines
- (G) algae
- (H) patch reefs
a: (H)... Explanation: Coral reefs provide food and shelter to many ocean organisms. Coral reefs occur mainly as numerous patch reefs. Patch reef provide food and shelter to many ocean organisms. That's why the answer is (H).

q: What lacks respiratory and excretory systems?
Options:
- (A) the Sun
- (B) insects
- (C) starfish
- (D) barnacles
- (E) ferns
- (F) water
- (G) Conifers
- (H) humans
a: (C)... Explanation: Echinoderms lack respiratory and excretory systems. Echinoderms are represented by the starfish. Starfish lack respiratory and excretory systems. That's why the answer is (C).

q: Active immunity is when an immune response occurs after a germ produces what?
Options:
- (A) harmful substances
- (B) bioaerosols
- (C) rapid expansion
- (D) Allergies
- (E) anemia
- (F) it needs them
- (G) Chemical energy
- (H) memory cells
a:
(H)... Explanation: Active immunity results when an immune response to a pathogen produces memory cells. Pathogens are germs that cause disease. Active immunity results when an immune response to a germ produces memory cells. That's why the answer is (H).