I think it is D. because the sun's radiant energy gives life to the earth life forms.
Answer:
pituilatry gland
Explanation:
The pituitary gland is sometimes called the "master" gland of the endocrine system because it controls the functions of many of the other endocrine glands. The pituitary gland is no larger than a pea, and is located at the base of the brain.
Answer:
covalent bonds
Explanation:
Nucleotides are joined together by covalent bonds between the phosphate group of one nucleotide and the third carbon atom of the pentose sugar in the next nucleotide.
Eukaryotes.
There are two main division of organisms in the wide spectrum of species. Eukaryotic organisms and prokaryotic organisms.
These organisms is divided based on the cell number they have. Further, eukaryotes have a dynamic function and strata in terms of cell structure and I'm not discussing in its internal parts but the external varieties invovled.
Eukaryotes are unison of different cells that function specifically however, interdependent of one another. That is why they are called cells, and group of cells are called tissues and so on.
