Earth's birds developed their diversity through natural selection by some birds need to have long beaks if they need to fish and some need webbed feet to swim. They have these traits through natural selection.
Trees produce many materials but also contribute to the environment by producing oxygen, preserving water and soil, helping air quality, and supporting wildlife. they feed millions humans every year as well.
Answer:
c
Explanation:
just give it a shot most answer are usually b and c
Nitrogen and phosphorus, they aren’t in a form that can be directly taken up by an organism.
