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natta225 [31]
3 years ago
6

What is the most abundant compound in living things?

Biology
1 answer:
sergij07 [2.7K]3 years ago
4 0

Answer: water

Explanation: Water is everywhere and required to survive, so water would be the most abundant compound.

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How does lung volume control inspiration?
Nesterboy [21]
An increase in volume DECREASES the pressure in the chest (pressure and volume vary inversely when temperature is held constant -- Boyle's law). Gas can only flow from an area of higher pressure to an area of lower pressure. It can't go uphill -- ever. It can only go from high to low pressure. When the diaphragm and intercostals contract, the diaphragm flattens and the rib cage rises. That increases the volume of the chest. That increase in volume decreases the pressure inside the chest (temperature is held constant -- because the temperature of the chest cavity does not change appreciably. It remains at body temp.). Air then flows from the area of higher pressure (atmospheric) to lower pressure (intrathoracic). That continues until the pressures are equal.

When the diaphragm and intercostals relax, the chest cavity decreases in size, the pressure increases to above atmospheric, and gas flows again from the area of higher pressure (intrathoracic) to lower pressure (atmospheric) until they are again equal.

It has nothing to do with the concentration of oxygen. You can ventilate a lung with ANY gas. It has to do with the change in pressure and only the change in pressure -- which is a function of the volume of the chest cavity.
3 0
3 years ago
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Pesticides are used on crops to prevent the crops from being eaten by pests such as insects. The chemicals in the pesticides kil
Yuliya22 [10]

Answer:

<em>The correct option is A) The chemicals in the pesticides could run off into water sources and contaminate them, which would kill many aquatic species.</em>

Explanation:

Although pesticides can be helpful in eliminating the pests which thrive on crop plants, yet the usage of pesticides can be harmful in a number of ways. Increase in the usage of pesticides can be harmful for humans when they utilize food from such crops which is loaded with pesticides. Also, increased usage of pesticides causes the pesticides to run off in nearby rivers and lakes due to conditions such as a flood. The toxic pesticides kills the aquatic life present in that lake or river.

6 0
4 years ago
Rank the following by size (1 is biggest, 5 is smallest):
algol [13]
Oxygen atom, liver, amino acid, fat molecule, then carbon dioxide molecule
4 0
3 years ago
#31-35 please, I'm so confused :(
maw [93]
31. Carbon and hydrogen
32. Glycerol, fatty acid
33. Neighboring carbons, saturated
34. Carbon atoms, unsaturated
Didn't get 35
4 0
4 years ago
Which of the following is a way that minerals are used?
bija089 [108]

Answer:

All of the above

Explanation:

4 0
3 years ago
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