A biome is defined as the large ecological area where the formation of plants and animals with common characteristics gather due to the similar climates. If I were an ecologist, and i will be determining whether an entire river and lake biome is being threatened by human activity, the indicator species that i might look for are the ones that have been introduced into the biome.
Answer:
gravity
Explanation:
the moon and earth are like solar magnets so when the moon is full or it is a bloody moon or whatever it orbits around the earth
Gasoline, smoke from factories, oil
