Ques and Ans: Streams may start with runoff seeping out of water containing what?
Options:
- (A) chemicals
- (B) Nutrients
- (C) Nitrous oxide
- (D) Helium
- (E) Lithium
- (F) Sulfur
- (G) soil
- (H) Sediment
(F)
Logic chain: Streams may start with runoff or water seeping out of a spring. Sulfur occurs native in the vicinity of volcanoes and hot springs. Streams may start with runoff or water seeping out of a body of water where sulfur occurs.

Ques and Ans: What does soy contain?
Options:
- (A) bioaerosols
- (B) Ribosomes
- (C) glucose
- (D) seeds
- (E) heat energy
- (F) Energy
- (G) hydrocarbons
- (H) layers of fat
(B)
Logic chain: Ribosomes are sites where proteins are made. Soy protein is a complete protein. Soy contains ribosomes.

Ques and Ans: Plants live just about everywhere within our planet's what?
Options:
- (A) crust
- (B) solar system
- (C) state
- (D) the environment
- (E) atmosphere
- (F) moon
- (G) solar energy
- (H) vegetation
(E)
Logic chain: Plants live just about everywhere on Earth. Air is everywhere in the earth's atmosphere. Plants live just about everywhere within the atmosphere.

Ques and Ans: There are what who study how animals behave in their natural environment.
Options:
- (A) infants
- (B) heat or cold
- (C) insects
- (D) sensory neurons
- (E) scientists
- (F) people
- (G) humans
- (H) reptiles
(E)
Logic chain:
Ethologists usually study how animals behave in their natural environment. Ethologists are scientists who study animals in their natural habitats. There are scientists who study how animals behave in their natural environment.