An El Nino occurs about every:
A) Year
B) Ten years
C) Twelve to fifteen years
D) Two to seven years
E) Fifty years
Correct Answer:
Verified
Q8: Which of the following is not an
Q9: Producers in hydrothermal vent ecosystems:
A)Are archaea and
Q10: Tropical rain forest soils are usually:
A)Nutrient rich
B)High
Q11: The Earth has an essentially constant tilt
Q12: On Earth,solar energy is most intense at:
A)The
Q14: The biosphere is defined as:
A)The portion of
Q15: An El Nino prevents:
A)Cold, nutrient rich waters
Q16: The major types of ecosystems are termed:
A)Habitats
B)Niches
C)Biospheres
D)Terrestrial
Q17: The rain shadow associated with mountains:
A)Is on
Q18: The different seasons of the year are
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