Which of the following instruments are used routinely to measure wind and temperature throughout the troposphere and stratosphere?
A. mercury barometer
B. stethoscope
C. radiosonde
D. ceilometer
Answer: C
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A(n) ____________ ____________ is an animal that strains plankton and tiny organic food particles from the
surrounding water. Fill in the blank(s) with the appropriate word(s).
Why do waves expend so much energy on a rocky headland?
A) Waves reflect off the headland and amplify the incoming waves. B) Wave velocity is greater on headlands than on beaches. C) Waves refract toward the headland on both sides. D) Headlands tend to have deeper water surrounding them, so the waves are higher.
Which of the following best matches the description?An organism that eats both plants and animals.
A. community B. intraspecific competition C. carbon cycle D. herbivore E. nitrogen cycle F. omnivore G. ectoparasite H. habitat I. secondary consumer J. limiting factor K. biomass L. producer M. nitrogen-fixing bacteria N. interspecific competition O. trophic level P. denitrifying bacteria
In the Northern Hemisphere, tornadoes are most frequent during the ________
A) October-December period B) month of September C) January-March period D) April-June period