Nitrogen fixation can be accomplished naturally either by a lightning strike or by a. nitrogen fixating bacteria b. denitrifying bacteria c. the harbor bosch process d. burning fossil fuels

The correct answer will be option-A.

Explanation:

The nitrogen cycle is a description of the process and the changes that represent the movement of nitrogen in different spheres of the earth.

The first phase of the nitrogen cycle is the nitrogen fixation which represents the pathway of how atmospheric nitrogen is converted into the nitrogen forms. It is done in three ways: electrical lightning (8%), Harbor process and the nitrogen-fixing bacteria.

Nitrogen-fixing bacteria converts 92% of the atmospheric nitrogen to various nitrogen forms like ammonia. They are the only living organism which has the ability to convert atmospheric nitrogen to a usable form.

Thus, option-A is the correct answer.

answer; bodies of water store heat during the day and release it at

the oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

explanation: