How Many Trees Have Been Donated as Part of the NASCAR

question 6

Multiple Choice

How many trees have been donated as part of the NASCAR Clean Air Tree Planting Program?

• A) More than 100,000
• B) More than 200,000
• C) More than 300,000
• D) More than 400,000

---

Definitions:

Dopamine

A chemical messenger that plays a critical role in controlling mood, motivation, pleasure, and reward sensations.

Synergistic Effect

The interaction of two or more agents or forces so that their combined effect is greater than the sum of their individual effects.

Cross-tolerance

A phenomenon where tolerance to the effects of a certain drug results in a reduced response to another drug, often because the two drugs affect similar brain pathways.

Potentiation

The increase in strength or effectiveness of a drug, action, or biological response when combined with another substance or condition.