I GIVE BRAINLIEST Select the correct answer from each drop-down menu.
Marine ecosystems support a(high, low) diversity of life,
largely due to (constant unchanging conditions, a lack of natural predators, the variety of environments) throughout the ocean.

high diversity, variety of environments

Explanation:

To this day, scientists are still discovering new marine animals. This is because of all of the different environments in the ocean, Some animals exist in tropical areas, others in freezing cold water. Some animals even exist solely in high pressure areas that are hundreds of meters below the surface. There are even organisms older than dinosaurs living in the ocean.