<span>The answer is B. We require trees to breath. We would be stuck in an unfortunate situation without our woods. Trees expel carbon dioxide from the environment and discharge oxygen through a procedure called photosynthesis. Basically all creature life on Earth needs oxygen to inhale and woodlands assume a key part in the complex worldwide oxygen cycle.</span>
Answer:
Researchers have found evidence which suggests that evolution drives animals to become increasingly more complex.
Explanation: i looked this up....
I'd have to say The best answer is B
