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:
How does carbon dioxide affect orca?
Image result for Carbon dioxide Direct effect on orca
Once those waters return to the ocean floor, they can take with them large amounts of carbon dioxide, sequestering the gas away for hundreds or thousands of years
(please give brainliest)
The early hominid stages can be differentiated from one another based on the complexity of the tools used by these species. The tool evolved along with the evolution of the humans. The more the hominids evolved by more complex their tools became. The tools made by the earliest hominids were used to fish out the termites. These tool developed and became more widely used as the humans evolved.
Hence, the answer is 'by observing the complexity of the tools'.
Photosynthesis is the opposite of cellular respiration.
glucose is converted into ATP during cellular respiration.
Light energy + Oxygen = Glucose
We breathout CO2 during the process of cellular respiration.
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