Answer:
I would say a polar bear.
Explanation:
They have gone though changes Because of global warming and climate change we humans have caused
I hope this helps! :))
Answer:
Avoid putting oils in water, and don't put trash in it either.
population density are habitats, food, mates, and ... Decreases.
I believe the answer is an eclipse.
Hydrogen as in hydrocarbons
nitrogen as in cyanides
sulphur as in carbon di sulphides
oxygen as in combustion of carbon
the rest i left out needs a third party element to bond to carbon