How much of bone is recycled each week?
a. 90-100%
b. 40-45%
c. less than 1%
d. 5-7%
d. 5-7%
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A species that has a disproportionately large effect on a community is called a ____ species
Fill in the blank with the appropriate word.
If you hold a stethoscope to your chest, you can hear the familiar "lub-dupp" sound of your heart in action. The "lub" you hear is
A. closing of the AV valves. B. closing of the semilunar valves. C. closing of the foramen ovale. D. atrial contraction. E. stretching of the aorta.
Sympatric speciation specifically EXCLUDES ________
A) behavioral isolation B) postzygotic barriers C) geographic isolation D) temporal isolation
Edible true mushrooms are typically members of the (Ascomycota/Basidiomycota/Deuteromycetes/Zygomycota).
Fill in the blank(s) with the appropriate word(s).