Extinctions, even those caused unintentionally by humans, seem less disturbing than the volume of extinctions and their implications for future generations. What do you think the importance is of the volume of extinctions? Do we have a responsibility to retain as much of the biodiversity as possible, or are other living organisms to be used as we see fit? Explain your answer.
What will be an ideal response?
Students should address the answer in one or more of the following ways:1. destroying species diminishes the ability of ecosystems to function properly. We are ultimately dependent upon these systems.2. destroying species denies future generations the opportunity to experience and learn from these species, perhaps to gain vital knowledge to enhance their lives3. destroying species is intrinsically wrong, in and of its own4. biodiversity will take millions of years to replenish the number and variety of species
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A coin tossed straight up moves upward, rotates, and drops. During all this time, the acceleration of the coin is
A. zero throughout its up and down motion. B. downward and constant. C. upward and constant. D. first decreasing, then increasing.
Will a soil comprised of a combination of sand 90 percent, silt 5 percent, and clay 5 percent tend to have high or low porosity?
Using Figure 27-1, the standard soil texture triangle, answer the question. What will be an ideal response?
Ten thousand years ago, forests covered approximately 50% of Earth. Today, forests cover approximately ________ of the Earth's land area
A) 15% B) 5% C) 30% D) 50% E) 70%
Which structure or substance has a higher albedo than thin clouds?
A) the moon B) snow C) ice D) water