Summarize the three evolutionary advances that have led to the success of the arthropods. What will be an ideal response?
(1) An exoskeleton, a strong, lightweight, form-fitted external covering and support.
(2) Striated muscle, a quick, strong, lightweight form of muscle that makes rapid movement and flight possible.
(3) Articulation, the ability to bend appendages at specific points. The appendages of more
primitive phyla can usually bend anywhere, but arthropod appendages bend at a joint. There
are no ball-and-socket joints in arthropods; instead, each joint along an appendage moves
through a different plane to ensure a full range of motion.
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Why does Earth have water?
a. photosynthesis b. large concentrations of sedimentary rocks c. torrential flooding in Earth’s early history
d. enormous tidal forces in early Earth history e. outgassing and comet impacts
Hard water is common in areas underlain by limestone Indicate whether the statement is true or false
Oil spill cleanup techniques are able to recover and remove the majority of spilled oil from the marine environment.
Answer the following statement true (T) or false (F)
The two most common non-foliated metamorphic rocks are ________ and marble.
A. gneiss B. phyllite C. quartzite D. slate E. migmatite