input: OPTIONS:
- massive damage
- Pesticides
- good weather
- Destroy bridges
- planting trees
- normal water levels
- deforestation
- cutting down oaks Now, answer this question: You are presented with the quiz "What has a negative impact on an ecosystem?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "cutting down trees has a negative impact on an ecosystem" and "oak trees are so strong". So, what's the best answer to the question?
A:
output: cutting down oaks
You are presented with the quiz "what can scraping oneself on a contaminated object cause?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "scraping oneself on a contaminated object may cause infection" and "infection is a common cause of death". So, what's the best answer to the question?

OPTIONS:
- disease
- h2o formation
- death
- Injury
- rabies
- pregnancy
- hair growth
- deadly

Answer: death
Problem: OPTIONS:
- Cataracts
- glycogen
- Hearing
- Hyperthyroidism
- food
- heat
- hormones
- Curiosity
Q: You are presented with the quiz "What has a positive impact on a cat's survival?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "better senses have a positive impact on an animal 's survival" and "cats have excellent eyesight, hearing and sense of smell". So, what's the best answer to the question?
Answer: Hearing
Problem:OPTIONS:
- eating food
- eating fish
- eating water
- liver cancer
- Greenhouse gasses
- fossil fuels
- eating mercury
- harmful substances

You are presented with the quiz "what has a negative impact on an organism's survival?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "eating something that contains pollutants has a negative impact on an organism 's survival" and "lakes have been found to be polluted with mercury, rendering fishes unsafe to eat". So, what's the best answer to the question?
****
A: eating mercury
You are presented with the quiz "What often requires bees?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "plant reproduction often requires pollen" and "bees carry pollen from one plant to another when they collect both nectar and pollen". So, what's the best answer to the question?
OPTIONS:
- food and shelter
- Play dates
- important habitats
- genetic diversity
- Plant reproduction
- timers
- gene flow
- Wasp study
Plant reproduction
You are presented with the quiz "using a gasoline engine requires what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "using a gasoline engine requires burning gasoline" and "gasoline ignites easily and burns vigorously". So, what's the best answer to the question?
OPTIONS:
- electricity
- no ignition
- carbon dioxide
- easy ignition
- difficult ignition
- no gasoline
- hydrogen and oxygen
- adding heat

Answer:
easy ignition