Answer:
Option (5)
Explanation:
The ultraviolet rays are found to be present in solar radiation and are allowed to be incident on the earth. These solar radiations are comprised of nearly 8% of UV rays. These UV rays are of three types, namely UV-A, UV-B and UV-C which are harmful to the living organisms on earth. Of all the three, the UV-B and UV-C are highly dangerous that can cause various skin diseases like cancer.
The presence of the ozone layer in the atmosphere acts like a blanket that does not allow these harmful UV radiations to enter into the atmosphere of the earth. The majority of the UV-A is able to reach the earth's surface, but they are not able to cause much harm. So, out of this 8% of total UV radiations, a little amount of it is successful in reaching the surface of the earth.
Thus, the correct answer is option (5).
The energy from the sun that reaches the surface of the earth is about 900 W/m2 while actual sun radiation is 1360 W/m. This is because of the Earth's atmosphere layers. This is further explained below.
<h3>What are
Earth's atmosphere layers?</h3>
Generally, there are five primary layers and a number of tertiary layers in the Earth's atmosphere. The troposphere, stratosphere, mesosphere, thermosphere, and exosphere are the principal layers of the atmosphere, from the lowest to the highest.
In conclusion, As a result, only roughly 900 W/m2 of the total 1360 W/m of solar radiation actually reaches Earth's surface. This is due to the layered composition of Earth's atmosphere.
Read more about Earth's atmosphere layers
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Answer:
b. increased temperatures
Explanation:
- The primary reason for the productivity in the Photo zones is due to the influence of major factors like the Nutrients, light, and grazing of animals. The rate at which the plants are eaten by herbivorous.
- Upwelling of cool, water from the bottom and interaction of warm waters from the above that derives nutrient-rich water to the surface. These upwelling can be consciously be caused by the winds and the depth of light penetrates down the layer of the water.
- As the intensity of water decrease with depth and with the concentration of nutrient the photic zone becomes shallower.
Sand, silt, clay
Soils can vary and be like loamy sand, sandy clay, silty clay, etc too
