What needle-like structure provides a skeletal network for a sponge?
a. cnidoblasts
b. polyps
c. spicules
d. zooxanthellae
e. mesoglea
c
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Consider an iron rod that is 1-m long and expands 1/4 cm when heated. By how much will a 100-m rod of the same material expand when similarly heated?
What will be an ideal response?
A 16-bit raster can store a wider range of values than an 8-bit raster.
Answer the following statement true (T) or false (F)
What do unconformities represent? What will be an ideal response?
Eutrophication of Lake Washington near Seattle was largely addressed by limiting levels of
A) phosphate from nonpoint source discharges of pollution. B) phosphate from point source discharges of pollution. C) nitrates from nonpoint source discharges of pollution. D) nitrates from point source discharges of pollution.