The answer is C. nitrogen.
Plants are main producers in ecosystems so, primary productivity of ecosystems depends on them. Carbon is necessary for plants, but it is widely present in plants. On the other hand, calcium and sodium are not as essential. However, nitrogen is important for plants because it is necessary to make proteins. Proteins take part in many different processes such as photosynthesis (this is actually primary productivity). But, nitrogen is not available to plants, they cannot absorb it simply from the air but rely on some symbiotic bacteria which are able to.
Answer:
Primary adaptive response
Explanation:
After the first exposure to an antigen, a primary adaptive response stimulates growth and multiplication of antigen-reaction cells. phagocytic immune response secondary innate immune response hyperactive cytotoxic response primary adaptive immune response
Answer:
the answer is D. indentifying the father of a child
Answer:
The correct answer is hypothyroidism.
Explanation:
Iodine is one of the essential components that must be incorporated in the human diet as it plays an important role in the generation of thyroxine hormone secreted by the thyroid gland. This hormone monitors various functions in the body like it regulates and maintains the body's metabolism, and offers energy to various parts of the body.
In case, if the level of iodine diminishes in the body then it can result in low production of thyroxine hormone, which eventually results in a condition known as hypothyroidism.
Green year round
You can search for the definition of deciduous trees for proof
