Preservation is
A) the sustainable use and management of natural resources.
B) maintenance of resources in their present condition.
C) invention and diffusion of new agricultural practices.
D) breeding programs to rebuild endangered species.
E) recycling natural resources.
Answer: B
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Why does a glowing splint of wood burn only slowly in air, but rapidly in a burst of flames when placed in pure oxygen?
A) There is a greater number of collisions between the wood and oxygen molecules. B) Oxygen is a flammable gas. C) Pure oxygen is able to absorb carbon dioxide at a faster rate. D) A glowing wood splint is actually extinguished within pure oxygen because there's no room for the smoke to expand.
Unlike universalizing religions, Hindus generally practice cremation rather than burial
Indicate whether the statement is true or false.
A sea breeze circulation will reverse direction and become a land breeze once per day
a. true b. false
An experiment ________
A) is an activity designed to test the validity of a hypothesis B) involves only collection of quantitative data C) is designed to generate new scientific hypothesis D) often involves manipulating as many variables as possible E) does not need to be repeated if well designed