What can use energy in order to make food for itself and others?
Options:
- (A) organisms
- (B) mollusks
- (C) trees
- (D) microbes
- (E) seeds
- (F) chlorophyll
- (G) plants
- (H) animals
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Let's think first: Producers use energy and inorganic molecules to make food. If the plant is green, it is a producer. Plants use energy to make food.... So the answer is [(G)]

What will make human temperatures go in a different direction from what sweating would do?
Options:
- (A) humidity
- (B) shivering
- (C) improve
- (D) energy usage
- (E) a blazing fire
- (F) hot air
- (G) harm them
- (H) Damages them
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Let's think first: Sweating reduces body heat. Shivering produces heat in the body. Sweating and shivering have different effects on our core temperatures.... So the answer is [(B)]

What is usually chosen in evolution?
Options:
- (A) common traits
- (B) Plant reproduction
- (C) advantageous systems
- (D) undesirable traits
- (E) Animal survival
- (F) competition
- (G) mysterious sytems
- (H) Earth revolving around the sun
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Let's think first: Evolution occurs by a process called natural selection. Natural selection only selects functionally advantageous systems. In evolution only functionally advantageous systems are selected.... So the answer is [(C)]

All chemical reactions require a form of what to get started?
Options:
- (A) oxygen
- (B) celestial measurement
- (C) gas
- (D) heat
- (E) UV
- (F) charge
- (G) Light
- (H) scientific expression
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Let's think first: All chemical reactions require activation energy to get started. Basically, heat is energy. All chemical reactions require heat to get started.... So the answer is [(D)]

Mussels have what?
Options:
- (A) seaweed
- (B) arms
- (C) Energy
- (D) a shell
- (E) warmth
- (F) bacteria
- (G) Length
- (H) legs
--
Let's think first: Most mollusks have shells. Mussels are bivalve mollusks. Mussels have shells.... So the answer is [(D)]

Pollen consists of tiny grains that are the _ of plants.
Options:
- (A) Mitosis
- (B) made
- (C) small
- (D) sperm
- (E) seeds
- (F) honey
- (G) flowers
- (H) edible
--
Let's think first: Pollen consists of tiny grains that are the male gametes of plants. Male gametes are called sperm. Pollen consists of tiny grains that are the sperm. of plants.... So the answer is [(D)]