Problem:OPTIONS:
- exocrine glands
- food and shelter
- exoskeleton
- bones
- Energy
- Chemical energy
- plasma
- Energy.

You are presented with the quiz "What is secreted by organisms like frogspawn to become a reef?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "many corals secrete an exoskeleton that builds up to become a coral reef" and "good examples are Bubble coral, Elegance coral, Frogspawn and other Euphyllia corals". So, what's the best answer to the question?
****
A: exoskeleton

Problem:OPTIONS:
- puddles
- microorganisms
- ponds
- nitrogen
- swamp vegetation
- Veins and arteries.
- streams and creeks
- peachleaf willow

You are presented with the quiz "What is better able to dissolve oxygen and nutrients than standing water?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "running water is better able to dissolve oxygen and nutrients than standing water" and "streams and creeks provide running water". So, what's the best answer to the question?
****
A: streams and creeks

Problem:OPTIONS:
- solid, liquid, gas
- important habitats
- Under 32 degrees
- heterotrophs
- colder and wetter
- strong
- homogenous
- an organism's body

You are presented with the quiz "What are all alligators?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "all animals are heterotrophs" and "alligators are cold-blooded animals". So, what's the best answer to the question?
****
A: heterotrophs

Problem:OPTIONS:
- in flowers
- huddle together
- more than one year together
- By wind and rain
- it helps plants in growing
- nocturally
- individually
- sub-units of species

You are presented with the quiz "complex social behaviors can be seen in insects living how" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "insects may live in large colonies and have complex social behaviors" and "honey bees are perennial insects with colonies that survive more than one year". So, what's the best answer to the question?
****
A:
more than one year together