Choose the correct statement regarding which major gas components comprised the atmosphere of the "young" earth or the earth today.
- "young" earth = n2 and o2
- earth today = n2 only
- earth today = o2 only
- "young" earth = co2 only
- earth today = n2 and o2

The answer is d if you are on edgenuity. 

Exploration mission 2;

Explosive eruptions are the most hazardous, involving large volumes of tephra and gases emitted from the volcano. lahars, pyroclastic flows, ashfall, and many other volcanic hazards are commonly associated with explosive eruptions. explosive eruptions are very dangerous. basically, any form of hazard can occur.

Geography