The ocean crust is composed mostly of
a. granite. d. rhyolite.
b. peridotite. e. gneiss.
c. basalt.
C
Environmental & Atmospheric Sciences
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The ion that has the longest residence time in the ocean is ________
a. silicon b. iron c. aluminum d. chloride
Environmental & Atmospheric Sciences
Which of the following illustrates intraspecific competition?
A) A butterfly feeding on the nectar of a daffodil flower B) A sea gull swooping down to snatch a fish from the water's surface C) A tick and a flea sharing a dog's back D) Male red-winged blackbirds defending limited nesting sites from other males
Environmental & Atmospheric Sciences
Which of the following is NOT a universalizing religion?
A) Buddhism B) Baha'i C) Islam D) Judaism E) Christianity
Environmental & Atmospheric Sciences
A soil rich in organic material will be ____
a. black or dark brown b. gray c. red d. yellow
Environmental & Atmospheric Sciences