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3 years ago

Muscles and bones in your arms and legs work like which simple machine?

1 answer:

3 0

The muscle pulling on a bone often works like a type of simple machine called a lever. Most of the bones of the limbs (arms & legs) act as levers for the body. I hope that this is the answer that you were looking for and it has helped you.

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sub-saharan africans show the largest genetic diversity of any human population. this is likely to have resulted from a. a small

boyakko [2]

accumulations of genetic mutations over time.

Genetic and epigenetic changes compound over time to cause cancer. While aging and chronic inflammation are the major causes of epigenetic changes, carcinogenic substances, UV radiation, and other conditions can also cause genetic changes. Our prior exposure levels and life history are reflected in the accumulation and patterns of changes in normal cells. The majority of accumulated changes are regarded as passengers, although they are linked to cancer drivers as they accumulate. Although only hypothesized for genetic changes, this has been demonstrated for aberrant DNA methylation. However, modern technology has made it possible to assess uncommon point mutations, and research has revealed that the rates of their accumulation do actually correspond with cancer risk.

Learn more about Genetic, here

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8 0

2 years ago

5. Some undiluted acids are more corrosive when diluted

wlad13 [49]

Answer:

The correct answer is : due to the hydrogen ions reacts and release high amount of energy with the strong acid.

Explanation:

Diluted acids are more corrosive then undiluted due to the presence of more H+ ions than the undiluted acids. The More the H+ ions are added the more corrosive the acid is.

When water is mixed with strong acid the hydrogen ions reacts with acid ions and a exothermic reaction takes place that release high amount of energy which boils violently, to avoid any accident it is advised to lab workers to wipe if any splash self before washing.

Thus, the correct answer is : due to the hydrogen ions reacts and release high amount of energy with the strong acid.

3 0

3 years ago

I need some help please! Compare and contrast covalent bonds and ionic bonds.

Tanya [424]

Covalent bonds are formed when two atoms are able to share electrons.

Iroinic bonds are form when two atoms are electrons from each other to complete the bond. This results in a pair of ions.

Covalent bonds:

Have a definite shape.
Have a low melting point.
At room temperature they are in a liquid or gas.
They occur between two non-metals.

Ionic bonds:

Have no definite shape.
Have a high melting point.
At room temperature they are solid.
They occur between a metal and a nonmetal.

4 0

3 years ago

Match the elements to the type of cycle that they possess Carbon Sulfur Oxygen Nitrogen Phosphorus Sedimentary Cycle or Gaseous

Aleks04 [339]

Answer:

Sulfur, phosphorous.... sedimentary cycle.

Carbon, oxygen and nitrogen.... gaseous cycle

4 0

3 years ago

Where does cellular respiration begin

Arlecino [84]

Answer:

cytoplasm

Explanation:

Cellular respiration is the process in which cells break down glucose, release the stored energy, and use it to make ATP. The process begins in the cytoplasm and is completed in a mitochondrion. Cellular respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport.

6 0

3 years ago

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