Glacial kettleholes, lava flows, and sand dunes are similar in that they support which of the following types of succession?

A) primary
B) secondary
C) tertiary
D) quaternary


Answer: A) primary

Biology & Microbiology

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Average human males are most likely to be attracted to women with a waist to hip ratio of 0.72.  Women with this waist to hip ratio are also the most fertile.  By being attracted to women with a waist to hip ratio, a male is increasing his chances of having children and thus improve his ____ .  

A.  longevity B.  gene flow C.  fitness D.  allele frequency

Biology & Microbiology

Which of the following enzymes is found in

the human mouth?

a. amylase b. pepsin c. gastrin d. secretin e. more than one of these enzymes is found in the mouth

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A __________ is a tangled mass of hyphae

a. sporocarp b. sporangia c. zygospore d. mycelium e. coenocyte

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Copper is an example of a(n) major mineral. Indicate whether the statement is true or false

Biology & Microbiology