In 1848, San Francisco Bay looked much different than it does today. At one time, the largest part of this estuary had an area defined by approximately ________
A) 20 × 40 km B) 40 × 150 mi C) 30 × 80 km D) 40 × 50 mi E) 15 × 40 km
C
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Microscopic bits of dust, smoke, salt, and other particles that commonly are mixed in with air molecules are called ___________________
Fill in the blank with correct word.
Before a hurricane forms, upper-level divergence above an easterly wave
A) pulls moisture into the system. B) causes the system to dissipate. C) moves west to east. D) weakens vertical convective circulation.
Which one of the following is a general characteristic of plants that are early colonizers during primary succession?
a. plants have wind-dispersed seeds b. plants are able to fix their own nitrogen c. plants can outcompete other plants that invade the area d. plants are shade-tolerant
Volcanoes composed of multiple, overlapping volcanic domes are called a
A) dome complex. B) shield volcano. C) composite volcano. D) cinder cone.