Could you please specify what “them” means?
It is the amount and types of bugs affect how many birds there are and what birds evolve.
The correct option is A.
The manner in which a particular population of living organism is spread out in an ecosystem is determined by the distribution of food in the ecosystem. Other factors that can determine the spreading out of a population in an ecosystem are predation, diseases and competition for mates. Food distribution in an ecosystem refers to how the food is distributed across a particular ecosystem.
<span>Steroids are lipids and are made up of carbon, hydrogen, and oxygen, while enzymes are proteins and are made up of amino acids. </span>