Q: You are presented with the quiz "Ethologists usually study how animals do what in an ecosystem?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "ethologists usually study how animals behave in their natural environment" and "students take a field trip to an ecosystem to observe the homes of animals in natural habitats". So, what's the best answer to the question? | OPTIONS:
- raising their temperature
- retaining heat
- reducing acid rain
- protect plants
- share properties
- behave in their homes
- storing water
- Generating heat
A: behave in their homes

Q: You are presented with the quiz "Why do dogs play?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "playing is just one of many ways that mammals and other animals learn how to behave" and "cats are Mammals that Shed Dogs are Mammals that Wag their tails". So, what's the best answer to the question? | OPTIONS:
- To keep their body heat.
- To win a fight
- it keeps an organism warm
- increases a body's strength
- To learn to behave
- allow growth
- To become dominant
- To spend time alone
A: To learn to behave

Q: You are presented with the quiz "What is the surface of a beach formed by?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "the surface of a beach is formed by mechanical weathering" and "water is a mechanical weathering force". So, what's the best answer to the question? | OPTIONS:
- light
- calcite
- plates
- a wave
- water
- Rocks
- dust
- fire
A: water

Q: You are presented with the quiz "What temperature causes burns?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "intense heat has a negative impact on an organism" and "burns, heat cramps, heat exhaustion, and heat stroke are caused by exposure to heat". So, what's the best answer to the question? | OPTIONS:
- the skin
- cigars
- dangerous
- an object
- intense
- burning
- engines
- wind
A: intense