C. living things respond to stimuli in the environment
Answer: Marina Trench
Explanation: The Mariana Trench stretches 2,500 kilometers (1,500 miles) in an arc that is edged by islands such as Guam and Saipan. Its deepest point is known as the Challenger Deep.
The number of species on Earth tagged at 8.7 million as of 2011.
Answer:
B
Explanation:
B. This is the part of the ocean where there is NOT enough light to support photosynthesis