Answer:
It stays the same
Explanation:
sound is reflected and only some part is transmitted. The transmitted sound will have lesser intensity.
The correct option is (A) solar radiation strikes the poles at a lower angle and travels through more atmosphere.
The main reason polar regions are cooler than the equator is that solar radiation strikes the poles at a lower angle and travels through more atmosphere.
<h3>
Why polar regions are cooler than the equator?</h3>
- Because they get much less solar energy than the tropics and mid-latitudes do, the earth's two pole regions are chilly.
- At either pole, there are six months of nonstop darkness and the sun never rises higher than 23.5 degrees over the horizon.
- Furthermore, the dazzling white surface reflects the majority of the sunlight that does reach the polar areas.
- The Arctic Ocean serves as a useful heat reservoir, absorbing heat from the atmosphere in the summer and warming the chilly winter environment.
Learn more about the equator and polar regions with the help of the given link:
brainly.com/question/2498503
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Answer:
Closing the stomata, or stoma, on the underside of the leaves in order to reduce water loss through the stoma during transpiration.
Answer:
A. pH
Explanation:
Denaturation of proteins is a protein whereby the protein molecule loses its primary structure and ultimately its physical functioning as a result of factors including pH, temperature or concentration of chemicals. Based on this definition, it is visible that denaturation of proteins can be caused by these three factors: pH, chemical and temperature.
However, in this case of PEPSIN enzyme, which is a proteinous molecule produced in the stomach of humans and functions in breaking down proteins, its denaturation occurs as it moves along the digestive tract to the intestines. This is as a result of the changes in pH in the digestive tract.
The pH of the stomach where pepsin is produced is acidic i.e. <3.0. However, as one moves towards the intestine, the pH increases, which is unfavorable or considered harsh for the pepsin enzyme. Hence, it gets denatured.
