Answer:
Dust bowl resulted from extreme drying and loosening of the soil that resulted in soil erosion by wind. Thus, it can be related that poor agricultural practices like over plowing , over grazing and leaving the land barren are human activities that must have contributed to the dust bowl.
Explanation:
- Dust bowl is referred to a period in early twentieth century when the the American and Canadian prairies faced severe dust storms.
- These dust storms resulted from severe drought and failure of practices to prevent soil erosion.
- Several people and livestock died as a result of choking.
- Over plowing, removal of top soil and small grasses exposed the soil to eroding winds and caused the dust storms.
The shape of proteins are affected by temperature and pH.
The change of shape of proteins is known as denaturation.
Denaturation of a protein will make it unable to function.
<h3>What factors affect protein functions?</h3>
Proteins are large molecules which are found in living organisms.
The shape of proteins are affected by temperature and pH of their environment.
The change of shape of proteins is known as denaturation.
Denaturation of a protein will make it unable to function since protein function depends on its shape.
In conclusion, protein denaturation affects its function.
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Answer:
The air near the earth’s surface consists of 77 percent nitrogen and about 21 percent oxygen.
Explanation:
I hope this helps
there is also a bit of Carbon Dioxide
Answer:
Hypothesis: If plants do not get enough water, then they will not grow.
Indpendent Variable: amount of water.
Dependent variable: height/growth of plant
Constants:
- same amount of sun
- same plant
- same amount of shade
- same pot
- same soil
- same water
- same temperature
Explanation:
Hope that this was the type of example that you're looking for, just a simple experiment that is a good way to show how the scientific method works. Good luck!
The enzyme needed is topoisomerase.
Topoisomerases are enzymes whose function is to regulate the unwinding of the DNA double helix. They ensure there is no overwinding or underwinding of the helix.
During the replication and transcription of DNA, the double helix becomes overwound ahead of the replication fork. If left to go on, the tension created would eventually hinder the ability of DNA and RNA polymerase enzymes to continue down the strand of DNA.
Topoimerases I and II enzymes correct this, ensuring the polymerase enzymes do their work smoothly.