Which of these conditions is least likely to cause a species to become extinct due to environmental changes? A. Specific food preferences
B. More competition for food
C. More genetic variation
D. Less genetic variation
I will give for the right answer.

the electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, x-rays, and gamma-rays.

the oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

explanation:

the answer to your question is tooth decay.