The right answer is vein (it contains blood and has valves).
The infra-cardiac veins of small and medium caliber possess this system of fight against gravity. The valves consist of a dense connective tissue, surmounted by endothelial cells, corresponding to a fold of the intima. They allow blood circulation in the sense organ / heart but prevent venous reflux.
Answer:
B, Isotonic solution
Explanation:
In an isotonic solution, the flow of water in and out of the cell is happening at the same rate.
The answer is C.)sending them on the shuttle to be suspended in space. This is the answer because after the nuclear fuel rods come out of the reactor, they go into a deep pool to cool off. Then they are then stored in concrete and lead-lined casks for dry storage, until, ultimately, the US government builds a deep underground storage facility to house them permanently. They are never sent on the shuttle to be suspended in space<span>. It would be too costly and too dangerous.</span>
Answer:
Producing as many offsprings as possible so the chance of them living is higher.
Explanation:
Answer;
Medulla.
When you run to catch a ball, your movements are planned and controlled from the Medulla.
Explanation;
The Medulla directly controls certain autonomic (involuntary) responses, such as heart rate, breathing, blood vessel dilation, swallowing, sneezing and vomiting.
It is located in the brain stem, anterior to the cerebellum.
