Species that serve as an early warning of damage to a community are called
A. indicator species.
B. native species.
C. keystone species.
D. specialist species.
E. nonnative species.
Answer: A
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"Multispectral remote sensing" refers to
A. the use of many different types of satellites to detect environmental features at a place. B. detecting energy at many wavelength bands of energy simultaneously. C. returning to the same site many times to analyze changes in the environment over time. D. the detection of features across a large part of Earth's surface at the same time.
In 2013, 10 percent of the energy used in the United States was renewable energy. Of that renewable energy, 17.9 percent was from wind. Therefore, in 2013, how much of the total energy used in the United States was from wind?
A) About 2% B) About 5% C) About 7% D) More than 10%
Lake breezes
A) blow onshore during the day. B) occur only when the lake water is as warm or warmer than the air. C) are prominent even with small mountain lakes. D) all of the above E) none of the above
What is the approximate mixing time of the ocean?
a. 16,000 years b. 160 years c. 16 years d. 1,600 years e. 1.6 million years