Which of the following is not a fresh water ecosystem

What is the term for an organism that makes its own source of chemical energy?

A younger student is trying to push a heavy box down the hallway. They are pushing as hard as they can, but haven't moved the box. Have they done any work? Why or why not?

What did you notice about the size of the blocks and their density? Did it match what you thought? Why or why not? (Hint: was the biggest block the densest?) this is for Earth science btw

What is essential for the survival of a species but not an organism?

What is fireplace starting energy

What is the purpose of implantation pregnany?

Ivy starts to get into the hot tub, but the water feels extremely hot. She stands in the water for a few moments, then slowly eases the rest of her body down into the water.

The differences between hashimotos' thyroiditis and grave's disease include b. only hashimoto's is a type ii hypersensitivity a. only grave's disease is an autoimmune disease c.

How could natural selection lead to evolution?

What algae is golden brown and one of the most common of all the unicellular organism in the ocean?