Solution idea: Producers use energy and inorganic molecules to make food. Leaves make food for the plant. Some producers have leaves to help use energy and inorganic molecules.
Q: Some producers use what physical feature to use energy and inorganic molecules?
Options:
- (A) leaves
- (B) sunlight
- (C) solar energy
- (D) sun
- (E) resevoir
- (F) chemicals
- (G) mitosis
- (H) trees
A: (A)

Solution idea: Male dogs use pheromones in urine to mark their territory. Pheromones are natural aphrodisiacs. Male dogs use natural aphrodisiacs in urine to mark their territory.
Q: What do male dogs use in urine to mark their territory?
Options:
- (A) Natural aphrodisiacs
- (B) competing for resources
- (C) Tails
- (D) Urine cleaner
- (E) Something coming from a gland
- (F) Chemical energy
- (G) an area swollen with pus
- (H) Chew toys
A: (A)

Solution idea: Macroevolution occurs over geologic time above the level of the species. Few families rival Piperaceae for difficulties at the species level. Macroevolution can occur in the taxonomical level called family.
Q: Macroevolution can occur in the taxonomical level called:
Options:
- (A) ferns
- (B) alpacas
- (C) complex
- (D) three
- (E) cracking
- (F) family
- (G) PDAs
- (H) ligt
A: (F)

Solution idea: Arteries generally carry oxygen-rich blood. Arteries carry blood away from the heart. Something that brings blood away from the heart carries oxygen-rich blood.
Q: What direction does something that has oxygen-rich blood go?
Options:
- (A) mouth of rivers
- (B) the body's largest organ
- (C) move to different locations
- (D) Earth orbiting the Sun
- (E) Move to another area
- (F) to move people
- (G) animal transport
- (H) Away from the heart
A: (H)