These gymnosperms made their appearance in the Triassic and became very widespread:a

angiosperms d. seed ferns
b. cycads e. A and C
c. horsetail rushes


B

Environmental & Atmospheric Sciences

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The least accurate forecast method of predicting the weather two days into the future during

changeable weather conditions is usually the:a. trend method. b. persistence forecast. c. analogue method. d. prediction by weather types. e. numerical weather prediction.

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Soil permeability depends on soil particle size, shape, and packing of soil grains

Indicate whether the statement is true or false

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Which of the following endings is generally associated with a monatomic anion?

A) -ade B) -ate C) -ic D) -ide

Environmental & Atmospheric Sciences

Imagine you are handed a mineral sample. It breaks with a conchoidal fracture but displays no cleavage. It does not react with hydrochloric acid, is a light pink color, and has a nonmetallic luster

It is harder than a streak plate, and has a specific gravity of 2.65. What mineral is it? A) olivine B) potassium feldspar C) calcite D) quartz

Environmental & Atmospheric Sciences