What Best Describes How Carbon Dioxide Concentrations in the Atmosphere

question 37

Multiple Choice

What best describes how carbon dioxide concentrations in the atmosphere have changed in the last 500 years?

• A) Concentrations were mostly steady until ~1850 when they began to increase.
• B) Concentrations increased until ~1850 when they began to decrease.
• C) Concentrations decreased until ~1850 when they began to increase.
• D) Concentrations varied wildly until ~1850 when they became more constant.
• E) Concentrations have remained constant throughout history.

---

Definitions:

Eleventh Century

The period extending from the year 1001 to 1100 in the Common Era, characterized by various historical and cultural developments worldwide.

Soap Production

The process of making soap, which typically involves the chemical reaction between a fat or oil and an alkali to produce glycerin and soap.

Consistency

The quality of being uniform, reliable, or constant over time.

Concise Language

The use of few words without sacrificing clarity or detail, making the message clear and straightforward.