A. the runner's muscles have accumulated lactic acid.. I think. 99% sure
Answer:
An organism's genotype is the set of genes that it carries. However, since an organism's genotype generally affects its phenotype, the phenotypes that make up the population are also likely to change.
Explanation:
For example, differences in the genotypes can produce different phenotypes.
C. winter solstice because if the North is having summer, the south would be having the opposite due to the direction the earth is tilted in orbit
Diffusion. Diffusion is the movement of substances from an area of high concentration to a low concentration until the molecules are equally concentrated. It is a passive process.
