input: OPTIONS:
- The size of the individuals
- global ecosystems
- The food of the species
- most organisms
- The number of individuals
- living things
- The color of the species
- Abnormal cell growth Now, answer this question: You are presented with the quiz "Harming an animal species has a negative impact on what?" 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 "population Population A population is comprised of the individuals of a species within an area". So, what's the best answer to the question?
A:
output: The number of individuals

input: OPTIONS:
- hair
- fighting bears
- lightning
- hemp
- coat
- cooked food
- wood
- fur Now, answer this question: You are presented with the quiz "What can be used to keep warm?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "insulated material can be used for keeping warm" and "guard hairs protect the fur, while the fur insulates the mammal". So, what's the best answer to the question?
A:
output: fur

input: OPTIONS:
- Animal survival
- define boundaries
- poison predators
- competition
- competing for resources
- detract enimines
- animal transport
- camouflage sent Now, answer this question: You are presented with the quiz "What do the pheromones in male dog urine used for?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "male dogs use pheromones in urine to mark their territory" and "for a male, urine markings are used to define the boundaries of their territory". So, what's the best answer to the question?
A:
output:
define boundaries