A mineral's hardness depends on the strength of its chemical bonds. Name and describe the factors that influence hardness

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Factors that influence bond strength influence mineral hardness. Ionic charge: the greater the charge, the greater the attraction between ions and hence, the stronger the bond. Ion size: the smaller the ion/atom, the smaller the distance between ions, thus a greater attraction and stronger bond. Ion packing: closely packed ions with their small distance between one another have stronger attractions and stronger bonds. Stronger bonds yield harder minerals.

Environmental & Atmospheric Sciences

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Identify three major economical and three major ecological benefits of forest ecosystems.

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Environmental & Atmospheric Sciences

Northeasters (or nor’easters) are midlatitude storms commonly found:a

along the Pacific coast of North America. b. along the Atlantic coast of North America. c. along the Gulf coast of North America. d. both a and b

Environmental & Atmospheric Sciences

Dolphins and porpoises emit sounds from their ________

A) blowhole B) junk C) melon D) museau du singe E) nostril

Environmental & Atmospheric Sciences

Sea otters play a role in maintaining the biodiversity of which ecosystem?

a. Tidepools b. coastal kelp forests c. coastal sandy beaches d. open ocean areas e. Estuaries

Environmental & Atmospheric Sciences