input: OPTIONS:
- huddle together
- sound
- interact
- Vibrates
- wave in air
- during the day
- Decibels
- Pheromones Now, answer this question: You are presented with the quiz "How do starfish communicate?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "echinoderms use pheromones to communicate with each other" and "modern echinoderms include starfish and sea urchins". So, what's the best answer to the question?
A:
output: Pheromones

input: OPTIONS:
- Pollution
- reproduction
- viruses
- disease
- habitat
- ecosystems
- influenza
- deforestation Now, answer this question: You are presented with the quiz "What is usually harmful to the population size of a species?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "harming an animal species has a negative impact on the population size of that species" and "pollution is usually harmful to one or more species of animal or plant". So, what's the best answer to the question?
A:
output: Pollution

input: OPTIONS:
- DNA
- global warming
- energy
- droughts
- seeds
- bees
- food
- legumes Now, answer this question: You are presented with the quiz "what does plant reproduction often require?" 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 are usually required for effective pollen transfer". So, what's the best answer to the question?
A:
output:
bees