Which of these is an example of conserving a non-renewable resource?

a) using electricity to fuel cars, instead of gasoline.
b) disposing wastes in landfills, instead of burning them.
c) traveling in individual cars instead of taking the bus.
d) getting rid of old aluminum cans instead of recycling them

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