Answer:
<em>The correct option is D. Plants</em>
Explanation:
Plants can be described as eukaryotic organisms which are able to make their own food. The process by which plants make their own food is termed as photosynthesis. During photosynthesis, plants convert water and carbon dioxide into glucose and oxygen in the presence of sunlight.
The oxygen produced by the land plants accounts for half of the oxygen present in the Earth. Hence, option D is correct.
Other options are false because none of them can carry out photosynthesis.
Answer:
I don't know what is the answer
Explanation:
b
Answer:
Nitrogen flows continuously in the nitrogen cycle
Explanation:
...............
Answer:
Cholesterol
Explanation:
Cushing Syndrome occurs as a result of exposure of the body to elevated levels of cortisol hormone (stress hormone) for a long time. The elevated level of cortisol which is a steroid hormone, results from increased synthesis of cortisol in the adrenal glands. Cortisol is synthesized from a substrate called, cholesterol. Cortisol synthesis occurs in the zona fasciculata of the adrenal cortex and controlled or regulated by the hypothalamus-pituitary-adrenal axis or HPA axis.
Cholesterol, which is an important substrate in cortisol synthesis, is a lipid usually found in cells and plays an important function in hormone synthesis, food digestion and synthesis of Vitamin D.