Photosynthesis Is a Main Means of Fixing ________ in the Ecosystem

question 141

Multiple Choice

Photosynthesis is a main means of fixing ________ in the ecosystem.

• A) benthos
• B) oxygen
• C) carbon dioxide
• D) nekton
• E) nitrogen

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Definitions:

Obsessive-Compulsive Disorder

A mental disorder characterized by repetitive, unwanted thoughts (obsessions) and/or actions (compulsions).

Agonist

A substance that triggers a physiological response when combined with a receptor.

Antagonist

A substance that interferes with or inhibits the physiological action of another, often referring to a drug or muscle that opposes or competes with another.

Glutamate

A major excitatory neurotransmitter in the brain, involved in memory, learning, and the regulation of the nervous system.