Which substance is a colorless, odorless, and highly toxic gas that forms during the incomplete combustion of carbon-containing materials?
A. carbon monoxide (CO)
B. chlorofluorocarbons (CFCs)
C. carbon dioxide (CO2)
D. methane (CH4)
E. ozone (O3)
Answer: A
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One suggestion for sustainably managing fisheries is to use wide-meshed nets for harvesting fish caught with nets. This would allow escape of ____________________
Fill in the blanks with correct word
The impulse-momentum relationship Ft = change in mv, applies to a fast-moving baseball hitting a bat with a force F. Then m in the equation is the
A. mass of the ball. B. mass of the bat. C. momentum of the ball. D. none of the above
What occurs at the boundaries of circulation cells?
A) Winds move eastward due to the Coriolis Effect B) Winds moves towards the poles C) Winds move horizontally and at high speeds D) Winds move vertically where the boundaries meet
About how many years old is the Earth as shown by science?
A. 10 thousand B. 4.6 billion C. 4.6 million D. 4.6 trillion E. 4.6 thousand