Electromagnetic radiation with wavelengths between 0.4 and 0.7 micrometers is called ____
A) ultraviolet light
B) visible light
C) infrared light
D) microwaves
B
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Describe and discuss the formation of the Proterozoic Banded Iron Formations (BIFs). What are
they composed of? Why are these BIFs economically important? What will be an ideal response?
Mid-ocean ridges are higher than surrounding oceanic crust primarily because
A. two plates are colliding. B. the lithosphere is thinner and hotter. C. the crust is thicker. D. the crust is stronger. E. transform faulting uplifts the rocks.
Across the developing world, children are considered an economic investment because they will be able to work and contribute to the family's income.
a. true b. false
When air is heated it expands and ________
A) explodes B) contracts C) sinks D) lowers its pressure E) burns