Answer:lakes and swamps
Explanation:any thing that is not man made
Solution
Cut open an onion.
Use forceps to peel a thin layer of epidermis from the inside.
Lay the layer of epidermis on a microscope slide.
Add a drop of iodine solution to the layer.
Carefully place a coverslip over the layer.
Observe it under a microscope to see onion cells.
<span>1) regulation of enzyme activity. 2) regulation of enzyme production.</span>
Answer:
A. wheter the producers are located on land or in the water.