What are the two major components of clean, dry air? What proportion does each represent?
What will be an ideal response?
Ninety-nine percent of clean, dry air is made up of nitrogen and oxygen. Nitrogen comprises approximately 78 percent and oxygen approximately 21 percent.
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Energy transmitted by electromagnetic waves, including radio, television, light, and heat, is ________
A) angle of incidence B) advection C) radiation D) convection E) scattering
____________________ is a dense tangle of vines and smaller trees that develops where direct sunlight reaches the ground in a tropical rainforest
Fill in the blank(s) with correct word
A mineral can be composed entirely of one element
Indicate whether the statement is true or false
The final stage of a tornado life cycle is called the ____________________ stage, when usually the tornado is stretched into the shape of a rope
Fill in the blank with correct word.