Correctly complete the following sentence using the terms in the lists below: ____ is the chemical name of the mineral ____, which is secreted by most marine organisms. This makes up the rock ____.
a. silicon dioxide, calcite, limestone
b. calcium carbonate, quartz, limestone
c. silicon dioxide, quartz, chert
d. calcium carbonate, calcite, limestone
e. calcium carbonate, calcite, cher
d. calcium carbonate, calcite, limestone
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In natural ecosystems, what types of organisms feed off pest species and control the pest populations?
A. prey B. rodents C. pesticides D. natural enemies E. insects
How does excess CO2 in the atmosphere cause more extreme flooding?
A. It warms the atmosphere and causes increased evaporation. B. It cools the atmosphere and causes decreased evaporation. C. It combines with rain droplets and makes them larger. D. It increases the acidity of the rain and while the amount of rain is the same, the acidity causes more erosion.
The binomial species name is composed of the ______ name and the ______ name. Fill in the blank(s) with the appropriate word(s)
An example of a precious metal is ____
A)platinum B)copper C)plutonium D)mercury E)uranium