Which sentence indicates that curium is a not a mineral? curium is a chemical element. it is a hard metal that looks like silver in light and glows red in the dark. it was first identified by american scientists working with nuclear energy during world war ii. the scientists, who included glenn seaborg, ralph james, and albert ghiorso, named the element after marie and pierre curie, nobel prize-winning scientists. they found that this human-made element is created when plutonium is bombarded with alpha-particles using a cyclotron. curium is a highly radioactive substance. it is extremely hazardous to human health. on entering the human body, it can hamper the production of red blood corpuscles and cause cancer. however, scientists continue to produce the element for its usefulness in scientific research. for example, it scientists understand the composition of rocks and soil on mars and can also be used to produce thermal energy. scientists have succeeded in producing many curium compounds, such as curium dioxide and curium chloride. these compounds are also used primarily in scientific research.

The sentence 'They found that this human-made element is created when plutonium is bombarded with alpha-particles using a cyclotron' indicates that curium is a not a mineral. Since the minerals are naturally occurring and the Curium is a human-made element, it is not a mineral.

Explanation:

Minerals are naturally occurring (not made by humans), inorganic elements or chemical compounds extracted from the Earth, which have a crystalline form and specific chemical and physical properties. Common minerals include quartz, feldspar, mica, calcite etc.  Native gold and silver are examples of pure element mineral.

Minerals are naturally occurring while Curium is a human-made element created by bombarding plutonium with alpha-particles using a cyclotron, it is not a mineral.

Elements are naturally occurring or man made substances which consists of the same type of atom. Examples are silicon, oxygen etc.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.