The electric current in common wires is made up of
A. ions.
B. electrons.
C. protons.
D. all of the above
Answer: B
Environmental & Atmospheric Sciences
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Hydrothermal vent communities are unusual because
A) a primary producer synthesizes organic matter. B) a producer exists without sunlight. C) a consumer eats a producer. D) there are no producers in the ecosystem.
Environmental & Atmospheric Sciences
Which has a higher porosity: sand or sandstone? Why?
What will be an ideal response?
Environmental & Atmospheric Sciences
In core economies, which of the following dominate the food production process?
A) consumers B) transnational corporations C) government officials D) agricultural workers
Environmental & Atmospheric Sciences
Papers that are published in a scientific journal are examples of _____ sources
Fill in the blank(s) with the appropriate word(s).
Environmental & Atmospheric Sciences