Cyanobacteria (blue-green algae) are part of the
a. biosphere. d. mesosphere.
b. hydrosphere. e. atmosphere.
c. lithosphere
A
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Refer to Figure 27.2 Topographic Map of Oolitic, Indiana. What is the scale of this map? What is the contour interval?
What will be an ideal response?
What is the percentage of Groundwater in the world's fresh water?
a. 0.1% b. 1% c. 10% d. 22%
The region where the northeast trades meet the southeast trades is known as the:
A) subtropics. B) high latitudes. C) rainforest. D) hot zone. E) ITCZ.
Electrons can sometimes fill orbitals in a manner other than according to the rules we have specified. If they do so we say the atom is in an excited state. Which of the following represent(s) the excited state of an atom?
A) 1s22s22p63s2 B) 1s22s22p63s13p1 C) both a and b D) neither a nor b