EVERYDAY SCIENCE

Detailed explanation-1: -Lower solar radiation level reduces the photosynthetic rate and hence plant growth.

Detailed explanation-2: -What is an effect of lower levels of solar radiation striking Earth?  Decreased rates of photosynthesis.

Detailed explanation-3: -UV-A and UV-B radiation inhibit photosynthetic production, thus reducing carbon dioxide intake and oxygen output. Under natural sun-lit conditions, UV-A and UV-B can diminish photosynthesis by over 8% 41. Phytoplankton require light for photosynthesis, but UV radiation can reduce their production.

Detailed explanation-4: -The solar radiation, which reaches the earth’s surface, warms the surface. However, the earth’s average temperature does not change, because the earth in turn radiates energy to the atmosphere and to space. The outgoing radiation is at the earth’s temperature and has its maximum in the infrared region of the spectrum.

Detailed explanation-5: -A systematic increase or decrease in the Sun’s release of energy–as little as one-half percent per century–can produce vast changes in Earth’s climate. Scientists believe that one percent decrease would lower Earth’s mean global temperature by more than degree Kelvin (2 degrees Fahrenheit).