Answer:
C
Explanation:
FEMA is an American agency for emergency and disaster relief. Thus, the agency would've been involved in helping communities affected in 2005 by Hurricane Katrina.
A system of two stars that revolve about their common center of mass(binary Star), A) Algol, <span>Algol-type binaries are a class of eclipsing binary stars</span>
Answer:
B
Explanation:
If magma cools very slowly, few centers of crystal growth develop. Slow cooling also allows charged atoms, or ions, to move large distances within the magma. Slow cooling results in the formation of large crystals. Igneous rocks with large crystals exhibit a coarse-grained texture.
Answer:
C. Potassium/argon dating
Explanation:
When it comes to dating old objects, science use a variety of methods, most of them based on known and stable physical/chemical reactions.
A. Principle of inclusions states that if you basically find a rock inside another rock, the inner one is older. Doesn't help in this case.
B. Uranium/lead dating is used to date very very old stuff, like more than a million years old, up to 4.5 billions years - the age of our planet. If I suspect the rock is about 200,000 years, this won't do.
C. Potassium/argon dating is used to date rocks that are older than 100,000 years, so this would be the good technique to use.
D. Carbon/nitrogen dating is use to date stuff ranging from about 5,700 years to 50,000 years. Not useful in this case.