Sound travels faster in solid
D. Certain genes are turned on and others are turned off; this action produces adult cells that are specialized
Human reproductive cloning should not now be practiced. It is dangerous and likely to fail.
Answer:
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
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