Answer:
4.543 billion years
Explanation:
I looked it up on a wonderful search engine called g00gle
Explanation:
please mark as brainlist answers
Answer:
The reason why the abundance of the mammals be successful is that it provides food and oxygen for the survival of the mammals.
These plants also attract the mammals which helps in mating of the animals and producing more offspring.
A healthy animal will only lead to the producing more healthy offspring and by getting proper food the animals will produce successful offspring.
It was probably because when a area had too much pollution, they could easily migrate away somewhere else by flying, while humans have to stay everywhere. Another reason could've been that birds can adapt to places quicker than other animals.
Hope it helps!
