How deep is the photosphere?
A. 300 km
B. 300 meters
C. 500 km
D. 500 meters
Answer: C
You might also like to view...
The presence of ____________ on a planet could be an indication of past or present forms of life. Fill in the blank(s) with the appropriate word(s)
When a resource is present in a fixed amount, it is said to be:
A) a nonextractive resource. B) a nonrenewable resource. C) a physical resource. D) a renewable resource.
Being at a crossroads location for world trade guarantees prosperity
Indicate whether the statement is true or false
Which of the following does NOT demonstrate the use of renewable resources?
A. using wind to power windmills to produce electricity B. using corn or switchgrass to produce fuel ethanol to power our vehicles C. using underground coal deposits to produce heat and electricity D. using water from a lake to turn turbines in a hydroelectric dam to produce electricity