Streams are considered to be , or flowing, systems.

lentic

biotic

lotic

What characteristic make legumes a good food source for food insecure populations

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin