Answer:
it is heredity, ive studied biology:photosynthesis is for plants, respiration is for oxygen or carbon, adaptation is through evolution, and heredity is tge genes you receive from biological parents
Explanation:
please give brainliest when its correct:)
There are several human threats endangering polar bear populations; over harvesting, human development and loss of sea ice due to climate change are all reducing the bear's numbers and habitat.