The answer is B. Carbon atoms can bond to other carbon atoms. In fact, carbon has four electrons to form four bonds with other atoms, including carbon. Carbon is the most common and used element in the world because it makes up all living things. All four main macromolecules also contain carbon.
Answer:
Teaching yourself to play the violin usually involves researching instructional materials, such as books and videos, but learning to properly hold the instrument is the first step. Get ideas for teaching yourself to play the violin with advice from an accomplished violinist in this free video on string instruments.
Answer:
They increase the levels of catecholamines—a family of brain chemicals that includes dopamine.
Explanation:
Stimulants are a class of drugs that “stimulate” the body's central nervous system, which includes the brain and spinal cord. They increase the levels of catecholamines—a family of brain chemicals that includes dopamine. These chemicals are used in the brain processes to signal reward and motivation.
2. includes evolution at the population and community level
4. refers to evolution above the species level
The answer is A.
tRNA brings amino acids in the cytoplasm of a cell to the ribosomes in said cell during RNA translation, allowing the formation of a protein.
