Answer: e. All of the above
Explanation:
The primary productivity (photosynthesis) can be define as the total production of organic matter in the form of carbohydrates from available atmospheric carbon dioxide and water in the presence of sunlight, appropriate temperature, and nutrients by the plants or other autotrophs. The life on earth sustains due to primary productivity as the plants prepare their own food and these plants are consumed by the animals and other living beings.
On the basis of the above description, all of the above is the correct option. As plants or other autotrophs will not be able to synthesize their food in the absence of nitrogen (nutrient) obtain from the soil, light, temperature, and water.
tree
a tree is a autotroph because it makes its own food out of sugars and releases oxygen. It uses sunlight, carbon and water.
✰ DNA stands for 
.
✰ It is a type of nucleic acid that contains the genetic code of organisms and is also the molecule of heredity in all cells.
✰ DNA is mainly present in the chromosomes in nucleus.
✰ It carries the genetic information that is passed on to the next generation.
Answer: board-certification physician with specialty training/education/ and board certification in "endocrinology" (the study of the "endocrine system" ; that is: the "HORMONE SYSTEM" and its regulatory mechanisms and dysfunctions and treatment regimes).
