EVERYDAY SCIENCE

SCIENCE

BOTANY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What caused one of the first climate changes?
A
Plants released nitrogen instead of oxygen
B
Plants used up all the methane
C
Plants released Oxygen when the used Carbon Dioxide
D
Plants used oxygen
Explanation: 

Detailed explanation-1: -Human activity is the main cause of climate change. People burn fossil fuels and convert land from forests to agriculture. Since the beginning of the Industrial Revolution, people have burned more and more fossil fuels and changed vast areas of land from forests to farmland.

Detailed explanation-2: -Plants take in carbon dioxide to use for photosynthesis. At the same time, as they grow and burn energy, they release carbon dioxide back into the air in a process known as respiration.

Detailed explanation-3: -So, plants take in carbon dioxide from the atmosphere for preparing food. At night, photosynthesis does not occur hence they take in oxygen and give out carbon dioxide. Therefore, it is said that during the daytime, plants take in carbon dioxide and give out oxygen, and during the night it is vice-versa.

Detailed explanation-4: -Plants produce oxygen as a waste product of making sugar using sunlight, carbon dioxide, and water. If a plant needs energy, but doesn’t have sunlight, then it can burn the sugar that it made back when it had sunlight, and doing so requires oxygen.

There is 1 question to complete.