Answer the following questions about Hanta-virus
Where did they occur?
How did they start?
How did they spread?
How deadly are they?
Is there a vaccine?
Find out if the virus is gone, or is it still a problem.

Grignard reactions are highly exothermic and are performed in ether solvent. there is a real risk of fire during this reaction. in the case that a fire should occur in your distillation apparatus, what is the best course of action? g

What came first egg or chicken? and is tomato a vegetable or a fruit?

What was the land like over 500 million years ago? what was under the sea?