Although the operation of natural selection requires that genotypes differ in fitness, for some geneticists it seems easier to understand natural selection than fitness. Partly this reflects the fact that the word “fitness” has been used to mean subtly different things. Here I distinguish among these meanings (e.g., individual versus absolute versus relative fitness) and explain how evolutionary geneticists use fitness to predict changes in the genetic composition
Not trying to anger you or sound disrespectful, but it would be easier to answer if we could actually see the diagram :/
ANSWER: the organisms in the air, on land, and in the water
REASONING: A <u>biosphere</u> is defined as an ecological system that comprises of all living things, and their relationships and interactions with the living and non living things around them. The first three answers only considers certain parts of the system, and the correct answer considers all parts.
