Weathering process in which rocks are reduced to rounded pebbles
a. Breccia
b. Chert
c. Conglomerate
d. Halite
e. Lime Stone
Answer is Conglomerate (It is a clastic sedimentary rock that forms the cementing of rounded cobble and pebble sized rock fragments. Conglomerate is formed by river movement or ocean wave action. The cementing agents that fill the spaces to form the solid rock conglomerate are silica, calcite, or iron oxides.)
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Millions of human lives could be saved if countries developed environmental policies that
A) control outbreaks of autoimmune diseases. B) prevent the degradation of the environment and encouraged sustainable use. C) provide food and shelter for the developing nations of the world. D) promote the construction of dams and power plants in the least developed parts of the world.
Describe any economic activity specific to this karst environment that you see on the topo map and aerial imagery.
What will be an ideal response?
Hardened soils that have minimal infiltration and aeration may form cryptogamic crusts
A) consisting of algae, lichens, and mosses that stabilize the soil surface. B) consisting of algae, lichens, and mosses that continue to erode the soil surface. C) characterized by large stones and gravel called desert pavement. D) representing accumulations of salts that prevent plant and fungal growth at the soil surface.
According to readings from the Mauna Loa Observatory, CO2 concentrations in May 2013 exceeded ________ for the first time during the last 800,000 years
A) 100-ppm B) 200-ppm C) 300-ppm D) 400-ppm E) 500-ppm