Answer:
C
<u>when two tectonic plates meet. One of the plates is pushed under the other into the Earth's mantle.</u>
Answer:
Countries trade with each other when, on their own, they do not have the resources, or capacity to satisfy their own needs and wants. By developing and exploiting their domestic scarce resources, countries can produce a surplus, and trade this for the resources they need.
Answer:
C. Do not contain enough oxygen to support plant and marine life