The current (2017) human population is about
A. 7.5 billion.
B. 10 billion.
C. 4 billion.
D. 4.6 billion.
Answer: A
Environmental & Atmospheric Sciences
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Photovoltaic cells
A. produce more carbon dioxide than burning fossil fuels. B. operate only on clear days. C. have high air and water pollution during operation. D. have a fairly high net energy yield. E. are cheap compared to fossil fuels.
Environmental & Atmospheric Sciences
When heat is added to boiling water, water temperature
A. decreases. B. increases. C. stays the same.
Environmental & Atmospheric Sciences
In GIS use, vector data specify location
Indicate whether the statement is true or false.
Environmental & Atmospheric Sciences
Which country is located in Southeast Asia (as opposed to East Asia or South Asia)?
a. China b. South Korea c. Vietnam d. Afghanistan e. Bangladesh
Environmental & Atmospheric Sciences