The picture below shows the structure of one type of organic molecule. CH3
H₂C
CH3
A caffeine molecule
Which two elements form the rings of this molecule?
O A. C and N
B. H and N
O C. Hand O
O D. C and o
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What statements describe a host organism?

Tides that occur during the new and full moons

The steps in the formation of extrusive igneous rocks are listed below in an incorrect order: 1. rock melts due to high temperature. 2. rock is buried deep under earth's surface. 3. magma is forced out of earth's surface during volcanic eruption. 4. lava cools and crystallizes to igneous rock. which of these best shows the correct order of steps in the formation of extrusive igneous rocks? 1, 3, 4, 2 2, 1, 3, 4 3, 4, 2, 1 4, 2, 1, 3