Which of the following best matches the description?Nitrogen, phosphorus, and potassium.
A. biocide
B. macronutrients
C. organophosphate
D. pheromone
E. micronutrients
F. rodenticide
G. weed
H. fungicide
I. chlorinated hydrocarbon
J. auxin
K. soft pesticide
L. hard pesticide
M. herbicide
N. macronutrient
O. persistent pesticide
P. micronutrient
Q. biomagnification
Answer: B
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Diatoms have one of the most efficient energy conversion rates known, using approximately 55% of absorbed sunlight
a. True b. False
How was salinity measured before the use of salinometers?
A) Silver nitrate was used to measure the chlorinity B) The mass of the salts were measured after water was evaporated C) The conversion of sodium levels to salinity based on equations D) All of these choices
A geologist is looking at deposits along a river below a large volcano. She finds large boulders mixed with sand and mud, and all of the material is comprised of volcanic rocks, particularly the mud which is volcanic ash. She quickly realizes these deposits represent an ancient ________.
a. rock avalanche b. lahar c. slump d. earthflow
Which of the following is NOT a major type of rock?
A. Metamorphic B. Igneous C. Sedimentary D. Bituminous