A geologist studies the earth's history.
Answer:
I think it's the top left answer choice because top right is a new moon, bottom left is a waxing crescent, and bottom right is 1st quarter.
Answer:
Basaltic magma -- SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, Na
Andesitic magma -- SiO2 55-65 wt%, intermediate. in Fe, Mg, Ca, Na, K
Rhyolitic magma -- SiO2 65-75%, low in Fe, Mg, Ca, high in K, Na
Explanation: