How does a squid produce?
Options:
- (A) Energy.
- (B) photons
- (C) voltage
- (D) sexually
- (E) Energy
- (F) bioaerosols
- (G) waves
- (H) food
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Let's think first: Mollusks reproduce sexually. Interestingly, a squid is also a mollusk. Squids produce sexually.... So the answer is [(D)]

Damage to the structural units of the kidneys can be caused by ..
Options:
- (A) harmful substances
- (B) an area swollen with pus
- (C) a lot of human deaths
- (D) Pesticides
- (E) Heavy rains
- (F) Leptospirosis
- (G) Veins and arteries.
- (H) high blood pressure
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Let's think first: Nephrons are the structural and functional units of the kidneys. Damage to the nephrons can be caused by conditions such as diabetes and high blood pressure . Damage to the structural units of the kidneys can be caused by high blood pressure ..... So the answer is [(H)]

What use energy and minerals to make food?
Options:
- (A) trees
- (B) plant life
- (C) humans
- (D) producers
- (E) bears
- (F) elephants
- (G) Most plants
- (H) ferns
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Let's think first: Producers use energy and inorganic molecules to make food. Minerals are inorganic substances. Producers use energy and minerals to make food.... So the answer is [(D)]

Changing in animals occurs by a process called what?
Options:
- (A) world climate change
- (B) It helps them survive
- (C) natural selection
- (D) Leptospirosis
- (E) ozone
- (F) relocation
- (G) permineralization
- (H) animal growth
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Let's think first: Evolution occurs by a process called natural selection. Actually, evolution is adaptation to change. Changing occurs by a process called natural selection.... So the answer is [(C)]

Why do dogs play?
Options:
- (A) To keep their body heat.
- (B) To win a fight
- (C) it keeps an organism warm
- (D) increases a body's strength
- (E) To learn to behave
- (F) allow growth
- (G) To become dominant
- (H) To spend time alone
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Let's think first: Playing is just one of many ways that mammals and other animals learn how to behave. Cats are Mammals that Shed Dogs are Mammals that Wag their tails. Playing is just one of many ways that dogs learn to behave.... So the answer is [(E)]

Flamingos are funny looking endothermic tetrapod:
Options:
- (A) ungulates
- (B) four limbs
- (C) animals
- (D) warm-blooded
- (E) storks
- (F) fur and fat
- (G) cuckoo
- (H) vertebrates
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Let's think first: Birds are endothermic tetrapod vertebrates. Flamingos are funny looking birds. Flamingos are funny looking endothermic tetrapod vertebrates.... So the answer is [(H)]