[[Ques]]: What are bird beaks often adapted to eat?
Options:
- (A) moles.
- (B) fish
- (C) nests
- (D) chicks
- (E) trees
- (F) apples
- (G) edible
- (H) Fruits
[[Ans]]: [Bird beaks are generally adapted for the food they eat. Birds eat the fish, algae and human food. Bird beaks are often adapted for eating fish.]
[(B)]

[[Ques]]: What clusters around the heat of submarine volcanoes?
Options:
- (A) ferns
- (B) organisms
- (C) vegetation
- (D) humans
- (E) emissions
- (F) Energy
- (G) insects
- (H) the sun
[[Ans]]: [Organisms cluster around hydrothermal vents in the ocean floor. Hydrothermal vents are powered by the heat of submarine volcanoes. Organisms cluster around the heat of submarine volcanoes.]
[(B)]

[[Ques]]: 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
[[Ans]]:
[Evolution occurs by a process called natural selection. Natural selection only selects functionally advantageous systems. In evolution only functionally advantageous systems are selected.]
[(C)]