Q: You are presented with the quiz "What improves the soil?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "decomposition increases amount of organic matter in soil" and "organic mulch improves the soil". So, what's the best answer to the question?

OPTIONS:
- decomposition
- erosion
- green manures
- evaporation
- fire
- nutrients
- dehydration
- water conservation

A: decomposition

Q: You are presented with the quiz "What are vital to body processes?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "minerals are chemical elements that are essential for body processes" and "minerals are essential to the body's function". So, what's the best answer to the question?

OPTIONS:
- alveoli
- light energy
- fur and fat
- Energy
- heat energy
- minerals
- Energy.
- oxygen

A: minerals

Q: You are presented with the quiz "What is used for cooking food by putting it over fire?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "apan is used for cooking food by heating food in it on a stove" and "fire puts off heat". So, what's the best answer to the question?

OPTIONS:
- a pan
- oil
- a sink
- a fridge
- corn
- Oak
- energy
- a microwave

A: a pan

Q: You are presented with the quiz "What effect has the existence of humans had on the environment?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "conserving resources has a positive impact on the environment" and "humans meet some needs and wants by using resources found in the natural environment". So, what's the best answer to the question?

OPTIONS:
- climate
- Negative
- Neutral
- Positive
- Smoking
- It expands
- sweating
- None

A:
Negative