rain or thunderstorms
typically thunderclouds and storms are the post affect of a cold front, causing D to be your answer, MrKnowledge
a molecule of other entity that can donate a proton or accept an electron pair in reactions.
Answer:
Endangered species are plants or animals that are near extinction. Invasive species are plants or animals that are not originally found in that ecosystem. I don't know the rest sorry. I hope this was helpful though.
Explanation:
Most of the nitrogen in earths atmosphere comes from bacteria.
