Which of these is an example of an autotroph (producer)?
a. animals
b. plants
c. minerals
d. nutrients
e. omnivores
b
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How do landfills cause groundwater contamination? What can be done in the construction of a landfill
that will make it less likely to contaminate groundwater? What will be an ideal response?
If the Disconformity is simplified as three steps
(1) Layers of sediment accumulate; (2) Sea level drops and an erosion surface forms; (3) Sea level rises and new sedimentary layers accumulate; then what is the right sequence for these steps? a. (3), (2), (1) b. (1), (2), (3) c. (2), (1), (3) d. (2), (3), (1)
Which of the following statements is true?
A) Not all of the electrons in the valence shell are valence electrons. B) The valence shell is usually the most unreactive shell. C) The valence shell always gives us the electron dot structure. D) The electron dot structure is made up of each of the valence shells. E) none of the above
List the four layers of Earth's atmosphere. How are they defined?
What will be an ideal response?