Answer: prokaryotic cells
Explanation:
A prokaryotic cell is a cell without a nucleus. Since this is a simple definition I cannot explain much further, but an example of a prokaryotic cell is bacteria.
Answer: These animals eat algae in the water.
Explanation: They clean the water in other words.
RNA has great capability as a genetic molecule; it once had to carry on hereditary processes on its own. It now seems certain that RNA was the first molecule of heredity, so it evolved all the essential methods for storing and expressing genetic information before DNA came onto the scene.
Meristematic , ground tissue, dermal tissue and vascular tissue .
Average annual precipitation and temperature.