Fossil Angiosperms Are Valuable Indicators of Climates Over the Past

question 29

Multiple Choice

Fossil angiosperms are valuable indicators of climates over the past __________ years.

• A) 3 billion
• B) 3 million
• C) 8 to 9 million
• D) 80 to 90 million

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Definitions:

Parkinson's Disease

A degenerative disorder of the central nervous system that affects movement, often including tremors.

Stimulant Drug

A substance that increases alertness, attention, and energy by raising the levels of key chemicals in the brain and body.

Alcohol

A chemical substance found in beverages such as beer, wine, and spirits, which can alter consciousness and affect cognitive processes and behavior.

Neurotransmitter

Chemical compounds responsible for conveying messages from one neuron to another across synapses within the nervous system.