How does eating contribute to the flow of energy in an ecosystem? Carbon bonds in food are broken, which releases energy.
Weathering breaks down rocks into chemicals like sulfur and nitrogen.
Consumers make food using light energy from the sun.
Energy is absorbed as heat when plants make food.

the arctic is a region of the planet, north of the arctic circle, and includes the arctic ocean, greenland, baffin island, other smaller northern islands, and the far northern parts of europe, russia (siberia), alaska and canada.

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."