The answer is:
the change in red blood cell volume is principally due to the movement of WATER.
B. theory
if many people perform the experiment and conclude the same things/ come to the same results, the hypothesis then becomes a theory. A theory is an idea that is widely accepted as true, but not 100% proven factual (ex: the theory of gravity)
Do you have a picture of the bones so I can help you ?
Answer: Tree
Explanation: Trees produce sap, nuts and fruits.
Answer:
Mutations. A mutation is a random change in DNA which therefore affects a gene and/or chromosome . ... If a mutation causes a new phenotype that makes an organisms better suited to a particular environment, it can lead to rapid change in the characteristics of the individuals in that species.