What is the fertility rate in the U.S.?
A) 2.5
B) 1.8
C) 1
D) 2.1
E) 2.3
Answer: D
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When do tidal currents reach their maximum velocity?
a. Midway between slack water and high tide b. During the period of slack water c. Midway between high and low tide d. Midway between low tide and slack water
Gullies:
a. form where two first-order streams meet. b. have perennial tributaries. c. lie on the interfluve. d. are smaller than rills. e. have ephemeral flow.
What is the primary goal of a paleoclimatologist?
A) to reconstruct past climates B) to prove that climate change caused the dinosaur mass extinction C) to study the impacts of volcanic eruptions on climate D) to find explanations for current global climate change
How does El Niño change the weather where you live??
What will be the ideal response?