Which example of resource management is sustainable? A. Harvesting trees faster than they can grow back
B. Using only nonrenewable energy resources
C. Taking very short showers
D. Removing the insulation around doors​

Coral reefs support more species per unit area than any other marine environment on earth. what is one way coral reefs are important to the health of the biosphere

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

When ash and dust begin to settle on the ground, they eventually become compacted by