What are two major hindrances to protecting species extinction within a single human lifetime?
What will be an ideal response?
Answers will vary but should note the following factors in some form:Ignorance of ecological principlesLack of political and ethical will to take action
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The distinctive layering found in marine sediments indicates that the properties of the sediment and the rates of sedimentation have varied with time.
Answer the following statement true (T) or false (F)
The Big Bang
A. occurred as a result of disturbances within the Large Magellanic Cloud. B. took place within time. C. marked the beginning of space and time. D. took place within space.
A commercial airplane has a mass of 5000 kg. During takeoff, the thrust of its engine is 10,000 N, producing an acceleration of
A. 0.5 m/s2. B. 2 m/s2. C. 1 m/s2. D. 4 m/s2.
How long does marine life usually tend to recover from a crude oil spill?
a. 2 years b. 5 years c. 7 years d. 10 years