Answer - The main problem caused by water pollution is the effect it has on aquatic life . Such as Dead fish, birds, dolphins, and many other animals often wind up on beaches, killed by pollutants in their habitat .Pollution disrupts the natural food chain as well . This is my opinion because most likely Dead fish and other animals do wind up on beaches and that can cause pollution
I think the answer is photosynthesis.
The circulatory system is the transport system for endocrine information. While the nervous system uses neurons, the endocrine chemicals and hormones must circulate through the body via blood vessels. Many glands in your body secrete hormones into the blood.
Euglenas are heterotrophic.
Hererophic (must consume food) and autotrophic (can make its own food).
Answer:
the awnser is the loss of water resources in estuaries
