Friday
November 28, 2014

Homework Help: science

Posted by Anonymous on Wednesday, January 23, 2013 at 3:04pm.

Why are fossil fuels such rich sources of energy for humans, but rocks are not?


A.
Rocks are too old to contain energy.

B.
Rocks are too difficult to extract from Earth.

C.
Fossil fuels contain energy-rich carbon from once-living organisms.

D.
Both rocks and fossil fuels contain carbon-based energy from dead organisms, but fossil fuels are easier to burn.

my answer is C.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

science - Metamorphism increases the _____. a) hardness of rocks b) coloration ...
science-physics - Q1)which of these energy resources does not originate from the...
5th Math - Sharon is dividing her polished rock collection into bags. Each bag ...
science - how does rock cycles change igneous rocks and sedimentary rocks in to ...
algebra - james collects 15 rocks. six of the rocks are smooth. the rest of the ...
algebra - james collects 15 rocks. six of the rocks are smooth. the,rest of the ...
Science - Compare and contrast sedimentary rocks that have a granular texture ...
Science - Compare and contrast sedimentary rocks that have a granular texture ...
geology - speaking of clastic sedimentary rock provide a overview of how plate ...
Math - a bag contains 100 rocks and if 35 rocks removed what fraction of the ...

Search
Members