Studies of Ice Cores Show That

question 32

Multiple Choice

Studies of ice cores show that

• A) CO₂ began increasing before the Industrial Revolution.
• B) atmospheric CO₂ and temperature are correlated.
• C) the CO₂ in the atmosphere has now reached 450ppm.
• D) the ratio of isotopic forms of hydrogen is a measure of precipitation.
• E) none of the above

---

Definitions:

Overload Units

Devices or mechanisms designed to protect electrical circuits and motors from operating above their rated capacity, preventing damage.

Thermal Overload Units

Devices designed to protect motors and circuits from overheating due to excessive current or overload conditions.

Heater Elements

Components in devices that generate heat through electrical resistance, used in applications ranging from industrial furnaces to household appliances.

Bimetallic Strip

A mechanical temperature sensor element made of two dissimilar metals bonded together, expanding and contracting at different rates to bend or curve in response to temperature changes.