Answer:
Through natural selection, organisms carrying better traits to survive in an ecosystem are able to survive and pass on their characteristics to their offspring. Through evolution, the allelic frequency of the population changes in abundance of the traits which are favoured by natural selection. As the male pom-pom monkeys carrying long bright puffs of turquoise fur all around his neck had a better adaptation to survive on the island hence, they were favoured by natural selection and through evolution all long bright puffs of turquoise fur all around his neck evolved.
The answer is Light exposure
It may be a lake, a marsh, a spring or a glacier. This is where the stream starts. The source is the farthest point of the river stream from its estuary or its confluence with another river or stream. ... The farthest stream is called the headstream or headwater.
I think it is the second answer, sorry if it is wrong/didn’t help.
