Answer:
D) four.
Explanation:
The two atria hold the blood that circulates away from the heart. The heart has four one-way valves, which open and close with each heartbeat. The tricuspid valve and the mitral valve are located between the atria and allow the blood to flow from the atria to the ventricles. Also you don't have to but mind marking Brainliest?
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I believe a doctor that takes care for the trachea is an <span>otolaryngologist.</span>
Answer: No
Explanation:
Decomposers break down dead plants and animals, the two main kinds of decomposers are bacteria and fungi catfish do not break down dead plants and animals
