Answer:
Atrioventricular valves.
Explanation:
Heart is the muscular organ of the body and acts as the pumping organ of the body. Human heart is not bigger than the fist and the human heart is divided into four chambers.
Heart murmur may be defined as the swishing sound that are made during the blood flow. This represent the heart problem. The bicuspid valve of heart is atrioventricular valve. The damage in the atrioventricular valve causes the heart murmuring.
Thus, the answer is atrioventricular valves.
Symbiosis...fungi exchange his nutrients and minerals from soil with solar energy from the plant
Carnivores (meat eaters): lion, wolf, polar bear. herbivores (plant eaters): cows, beaver, deer. omnivores (both meat and plant eaters): bears, humans, hedgehogs.
Answer:( answer for number one) an essential nutrient for the production of amino acids, proteins, nucleic acids. ( number 2 ) for the growth, maintenance, and repair of all tissues and cells, and for the production of the genetic building blocks, DNA and RNA
Answer: [B]: "proteins" .
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