Populations can have variety, despite being made up of the same species. If a population has different expressed traits, this can be due to different inherited alleles. The frogs below are the same species, but they have different shades of green based on their inherited alleles. In a particular environment, lighter green frogs are easier to see by predators. Explain how natural selection could lead to a change in allele frequency

Environmental differences within ecosystems are generally caused by

What is the function of the somatic nervous system? connects the brain and the spinal cord to the rest of the body carry signals to the muscles and glands includes all nerves controlling the muscular system and external sensory receptors controls internal organs like the heart and bladder

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.