During the Cambrian, Trilobites developed a flexible exoskeleton which allowed them to ________
A) sink to the bottom of shallow ponds to find food
B) avoid being eaten by other creatures
C) climb trees and find food
D) eat smaller life forms by crushing them in their jaws
E) burrow in soft sediment to find food
E
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The joints in the photograph mimic topography, indicating that they formed
A) while the granite was still molten.
B) while the rocks were still buried at great depth.
C) when the weight of overlying rocks was unloaded, allowing expansion along the joints.
D) along a subduction zone.
The greenish blue of water is evidence of the
A) reflection of greenish-blue light. B) reflection of red light. C) absorption of greenish-blue light. D) absorption of red light. E) interaction between green and blue frequencies of light.
How does an atom become a positive or a negative ion?
a) An atom becomes a positive ion by losing an electron; it becomes a negative ion by gaining an electron. b) An atom becomes a positive ion by gaining a proton; it becomes a negative ion by losing a proton. c)An atom becomes a positive ion by losing a neutron; it becomes a negative ion by gaining an electron. d) An atom becomes a positive ion by gaining an electron; it becomes a negative ion by losing an electron. e) An atom becomes a positive ion by gaining a proton; it becomes a negative ion by gaining an electron.
Write down the equation of state and explain what it tells us about the behavior of gases
What will be an ideal response?