Q: Organisms that live in marine biomes must be adapted to most of the what on the planet?
Options:
- (A) water
- (B) liquid
- (C) Light
- (D) Energy.
- (E) growth
- (F) Winter
- (G) energy
- (H) heat
A: So, my chain of thought: Organisms that live in marine biomes must be adapted to the salt in the water. Most of the water on the planet is salt water in the oceans. Organisms that live in marine biomes must be adapted to most of the water on the planet. The answer is (A).

Q: What are endothermic vertebrates with legs?
Options:
- (A) Birds
- (B) mammals
- (C) Snakes
- (D) ducks
- (E) Lizards
- (F) ants
- (G) long
- (H) toads
A: So, my chain of thought: Birds are endothermic tetrapod vertebrates. Legs define Tetrapods. Birds are endothermic vertebrates with legs. The answer is (A).

Q: If an animal has a spinal column in their skeletal system what is it called?
Options:
- (A) skeletal animal
- (B) vertebrate
- (C) A Greek letter
- (D) invertebrated
- (E) organ
- (F) critical organs
- (G) spined animal
- (H) epidermal
A:
So, my chain of thought: Vertebrates are animals that have a backbone. Vertebrates generally have a backbone called the spinal column. Vertebrates are animals that have a spinal column in their skeletal system. The answer is (B).