Answer:
The correct answer is A. dopamine.
Explanation:
Stimulants are believed to work by increasing dopamine levels in the brain. Dopamine is a neurotransmitter associated with motivation, pleasure, attention, and movement. For many people with ADHD, stimulant medications boost concentration and focus while reducing hyperactive and impulsive behaviors.
Answer:
Evolution is a process that results in changes in the genetic material of a population over time. Evolution reflects the adaptations of organisms to their changing environments and can result in altered genes, novel traits, and new species. ... An example of macroevolution is the evolution of a new species.
Water is not a organic molecule
The best answer among the choices given is option D. Both growth and reproduction is the <span>characteristic of living things that is important to the survival of a group of animals rather than an individual member of this group. These two are very important in order for the survival of all the living things on Earth. Without these things, life here on Earth will end.</span>
