Generally speaking, the intertidal area is:
a. rich in life, with considerable species diversity
b. not particularly rich in life.
c. not particularly rich in life, but rich in food.
d. virtually devoid of life because of the great difficulty organisms have in surviving there.
a
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The physical phenomenon that results from the spin of electrons that is found in some solids,
particularly iron, and moving electricity is known as ____________________. The zone around substances with this property is called a ____________________. Fill in the blank(s) with the appropriate word(s).
Which of the following molecules is(are) polar?
A) CH2Cl-CH2Cl B) CH3-CHCl2 C) both a and b D) neither a nor b
All of the following are possible indicators that creep is occurring except for ________
A) curved tree trunks B) tilted fences or power line poles C) an extremely thick soil profile D) cracks in roads or sidewalks
Over the past 40 years, air quality has gotten substantially worse in many of the major cities of North America.
Answer the following statement true (T) or false (F)