Answer:
cold with high salt content
Plankton is part of an aquatic ecosystem
Answer:
Well for one photosynthesis gives out oxygen. This makes all animals able to live. So in that way it helps us and the world around us. Without photosynthesis we also could not eat food. No animals could live and no plants ould live. VERY IMPORTANT!
Explanation:
Answer: machinery and equipment developed from the application of scientific knowledge.
