Multiple Choice
The modern oceans are a major repository for the greenhouse gas______ , which some organisms utilize to make their shells.
A) iron oxide
B) ammonia
C) SiO2
D) CO2
E) limestone
Correct Answer:

Verified
Correct Answer:
Verified
Related Questions
Q119: Why is it important that we have
Q120: The salinity of the oceans is _.<br>A)
Q121: _are the earliest life forms identified on
Q122: Many reptile groups became extinct at the
Q123: Western North America is the leading edge
Q124: What was <u><b>not</b></u> one of the gases
Q125: Toward the end of the Mesozoic era,
Q126: Which of the following was an important
Q127: Well preserved remains of many tiny organisms
Q128: The Cenozoic era is often called the