Autosomes. The somatic chromosomes are referred to as autosomes.
Directional selection I'm pretty sure hope it helps!
Humans get D vitamin from sunlight. the plants perform photosynthesis and grow , we eat those fruits and vegetables grown in the plants. so indirectly we humans and other animals are benifitted from sun sunlight . flesh eating animals eat herbivores animala so they are also benifitted
It is apart of cellular DNA an ATP, and is a major component of bones and teeth, it is often only available in limited quantities in the the environment.
Answer:
so many processes requires oxygen to operate .
An example is the process of plants making their own food .
