Answer:
B) a group of a marine animals coexisting in a group of a dozen or so
Explanation:
hydrosphere
atmosphere
cryosphere
Answer: atmosphere
Explanation:
The atmosphere is the gaseous layer of the earth. It consists of mass of gaseous which are collectively called as air. In the air the particles such as dust particles, smoke, soot and chemicals are present. These are attracted by the gravitational pull of the planet. The atmosphere protects the earth from the entry of harmful UV and infrared radiations coming directly from the sun. This way atmosphere protects the living beings from damage caused by these radiations.
On the basis of the above description, atmosphere should be the focus of study.
B.respiration
C.decomposition
D.building proteins
The correct answer is A.photosynthesis
In the process of photosynthesis plants use the energy of the sunlight and absorbed CO2 from the atmosphere to create simple sugars. In this process, plants also create oxygen molecules that are released to the athmosphere.
Human activities that involve burning fossil fuels cause a release of a huge amount of CO2 to the atmosphere. Photosynthesis in plants can reverse the effects of this, but only to a certain extent. This is, but all means, not enough to stop the global warning effect that the CO2 build-up in the atmosphere is causing.
Answer:The correct answer is -
A.photosynthesis.
Explanation:
Human activities such as burning of fossil fuels (like coal and oil) , clearing of forests can lead to the accumulation of CO2 (carbon dioxide) in the atmosphere, which affects the carbon cycle.
This can lead to many harmful effects like global warming (overall rise in the earth temperature).
These human interactions can be counteracted through photosynthesis.
Photosynthesis is a process of formation of food (glucose) in green plants and algae using CO2 and water in the presence of sunlight.
It releases oxygen in the atmosphere as a byproduct of this process.
The atmospheric CO2 can be reduced through photosynthesis and therefore, it can help counteract the given human activities.
Thus, option A) is the right answer.