It's both! Scientists really can't agree on it.
Answer:
the answer would be the 3rd answer
Explanation:
a half life is the time it takes for half of a radioactive substance to decay
I hope this helps :)
Answer:
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Explanation:
retractable claws, the farther down the line from the common ancestor, the fewer the animals that share the characteristics
Glycolysis starts with one molecule of glucose<span> and ends with two </span>pyruvate<span> (pyruvic acid) molecules, a total of four </span>ATP<span> molecules, and two molecules of </span>NADH<span> .
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Answer:The endocrine system produces hormones that are transported to the target regions by the circulatory system. The Circulatory System delivers oxygen and nutrients in the blood to the surrounding cells to maintain Homeostasis. The blood in the Circulatory System is needed throughout the body so that other systems work properly. Like for instance the Nervous System has the brain, and the brain needs blood to function.
Explanation:
