Hi!
Question - How do mutations lead to variation
Answer - B. By producing changes in the genetic code
Why - "In which can create entirely new alleles in a population"
A membrane that allows only some materials to move in and out of the cell is B. Semipermeable.
A. competitive exclusion.
Parasitism, Commensalism, and Mutualism are all types of symbiotic relationships.
Producers use photosynthesis
