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The ph scale is a scale used to express the concentration of hydrogen ions in solution. a neutral solution, neither acidic nor basic, has a ph of what?
asked
Jan 2
in
Science
0
votes
1
answer
45
views
The lungs of mammals are unique in having what?
asked
Jan 2
in
Science
0
votes
1
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46
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Nonflowering vascular plants have three basic types of leaves: microphylls, fronds, and what other type?
asked
Dec 31, 2024
in
Science
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1
answer
47
views
Helicopters store large amounts of rotational energy of what type in their blades?
asked
Dec 30, 2024
in
Science
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1
answer
80
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Frequency and intensity are two measurable properties of what?
asked
Dec 30, 2024
in
Science
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1
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45
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Clouds are formed from what?
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Dec 30, 2024
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1
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39
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Angiosperms possess reproductive structures that attract animals that perform what role?
asked
Dec 30, 2024
in
Science
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1
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45
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What is the term for the maintenance of a steady state despite internal and external changes?
asked
Dec 27, 2024
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Science
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