Which muscle provides protection to the abdominal organs?
Answer: rectus abdominus
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By 250 mya, the seed plants called ____ were our planet’s dominant flora
a. hepatophytes b. lycophytes c. bryophytes d. angiosperms e. gymnosperms
A peptidoglycan-like polymer found in the cell walls of some Archaea is called ________.
Fill in the blank(s) with the appropriate word(s).
Which ion is pumped out of guard cells in order to increase their turgidity?
a. H+ b. Ca2+ c. Na+ d. K+
Many of water's emergent properties, such as its cohesion, its high specific heat, and its high heat of vaporization, result from the fact that water molecules _____.
a. are very small b. are in constant motion c. are attracted to each other by partial negative and positive charges on the oxygen and hydrogen atoms, respectively d. are extremely large e. tend to repel each other