As biotechnology has improved, scientists are able to look more closely at DNA, the molecules that hold genetic instructions for development, reproduction, and functioning. The ability to study DNA closely allows scientists to find evidence of genetic mutation and
better understand the effects of these changes. Think about how genetic mutations can be harmful, beneficial, or cause no change at all.

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.