question: How does a squid produce?
Options:
- (A) Energy.
- (B) photons
- (C) voltage
- (D) sexually
- (E) Energy
- (F) bioaerosols
- (G) waves
- (H) food
answer: Mollusks reproduce sexually. Interestingly, a squid is also a mollusk. Squids produce sexually.
The answer is (D)

question: What sort of circulatory system do frogs, toads, and salamanders share?
Options:
- (A) live birth
- (B) It helps them survive
- (C) matter vibrating
- (D) two-chambered heart
- (E) Veins and arteries.
- (F) biological diversity
- (G) three-chambered heart
- (H) four-chambered heart
answer: Amphibians have a relatively complex circulatory system with a three-chambered heart. Frogs, toads and salamanders are amphibians. Frogs, toads and salamanders have a relatively complex circulatory system with a three-chambered heart.
The answer is (G)

question: What are bacteria and algae that use sunlight to make food?
Options:
- (A) birds
- (B) carnivorous organisms
- (C) Transfers energy
- (D) competing for resources
- (E) planktonic plants
- (F) By wind and rain
- (G) fish
- (H) Chemical energy
answer: Phytoplankton are bacteria and algae that use sunlight to make food. Planktonic plants are called phytoplankton. Planktonic plants are bacteria and algae that use sunlight to make food.
The answer is (E)

question: What is the process by which living things give rise to offspring?
Options:
- (A) DNA
- (B) photosynthesis
- (C) bird
- (D) sex
- (E) subtraction
- (F) gametes
- (G) eggs
- (H) ovum
answer:
Reproduction is the process by which living things give rise to offspring. Sex equals reproduction. Sex is the process by which living things give rise to offspring.
The answer is (D)