Approximately ________ countries are currently experiencing water shortages

A) 5
B) 10
C) 80
D) 165


C

Environmental & Atmospheric Sciences

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What strategy would increase the threat of climate change?

A. Improve energy efficiency. B. Shift from fossil fuels to a mix of carbon-free energy resources. C. Stop cutting down tropical forests. D. Capture and store as much carbon dioxide as possible. E. Continue with current practices.

Environmental & Atmospheric Sciences

What two events likely caused the extinction event at the end of the Cretaceous?

A. a massive fall in sea level and volcanic eruption B. an ice age and asteroid impact C. the evolution of mammals and an ice age D. a global fire and related fireball impacts E. an asteroid impact and massive flood basalt eruption

Environmental & Atmospheric Sciences

Molecular oxygen (O2 ) in Earth's early atmosphere probably originated from the splitting of water vapor (H2O) into hydrogen and oxygen

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

The specific heat of lead is 0.0380 cal/g·°C. If 47.0 calories of energy raised the temperature of a lead sample from 28.3°C to 30.1°C what is the mass of the sample?

A) 26 g B) 690 g C) 1.2 x 10^3 g D) 2.3 x 10^3 g

Environmental & Atmospheric Sciences