This pyramid shows the ratio of organisms, energy content, and biomass at different trophic levels. Suppose that a system has 5000 grasshoppers. How many hawks would be expected?
a. 5
b. 50
c. 500
d. 5000
Answer: b. 50
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Calculate the positive or negative relationship between PRECIP and POTET. Record this plus or minus value in the spaces provided. Note that January and June are already figured. Complete the remainder of the water-balance table, recalling that storage capacity is 100 mm. Data are smoothed over the entire month.
What will be an ideal response?
The nucleus or foundation of a continent is a
a. Permian province. d. craton. b. platform. e. greenstone belt. c. orogenic belt.
A sea breeze
A) is most common in winter. B) is strongly affected by the Coriolis force. C) requires the formation of a surface low pressure inland. D) flows from land to sea. E) results because water has a lower heat capacity than land.
The delta of the ________ River is a wave-dominated delta that resembles the Greek letter delta and is the origin of the name.
A. Nile B. Colorado C. Mississippi D. Ganges E. Amazon