Correct order is: organism, population, community, ecosystem, biosphere.
Answer:
not sure but I think it's option C.
Answer:
pollution of water. or do you mean pollutant in which case would be like garbage or oil spills
A chromosome is a piece of protein that is inside a cell's Nucleus that contains genetic information. DNA is inside the chromosome, which gives the chromosome the genetic information
Answer:
directional selection, is a mode of negative natural selection in which an extreme phenotype is favored over other phenotypes, causing the allele frequency to shift over time in the direction of that phenotype.