In active transport, materials move from an area of high concentration to an area of lower concentration (goes down the concentration gradient) and it requires or uses energy in the form of ATP (adenosine triphosphate)
Enters the left atrium...this is the oxygenated blood from the lungs (pulmonary)
The answer is D because bacteria is one or more cells.
The sequence of B) nucleotides in a DNA molecule determines the protein that will be produced.
Answer:
Competition between two species happens when both species are using the same resources in an area. This usually happens when a new species moves into the area of the current species. Competition leads to both species being harmed.
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