Decades ago, a brick factory used to be located along a river. Waste materials and faulty bricks were piled along the banks of the river, and some of them fell into the water. Years later, some of these materials were removed
The bricks were still recognizable as bricks, some with the manufacturer's mark clearly visible on the front, but the edges and corners were rounded over. Why were the edges and corners of the bricks so rounded over while the faces of the bricks were largely untouched?
What will be an ideal response?
Answer: The edges and corners of a material have more surface area exposed than the flat surface in the center of the rock. As a result, they will weather faster, making the overall shape of the rock more rounded.
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What will be an ideal response?
The Law of Conservation of Energy states which of the following?
A) energy cannot be converted from one form to another B) kinetic energy is conserved C) potential energy is conserved D) none of the above
A climax community is one that
A. Contains oaks or white spruce B. Lasts forever C. Is adapted to periodic disruption D. Is relatively stable and long lasting E. Is impervious to disruption
Submarine sonar systems can cause ____________ pollution that negatively affects whales and other organisms in the
ocean. Fill in the blank(s) with the appropriate word(s).