Describe how mucus and cilia help to keep the airway free of dust and
bacteria.
...
Biology, 23.03.2020 14:55, anastasiasam1916
Describe how mucus and cilia help to keep the airway free of dust and
bacteria.
Answers: 1
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The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2
Answers: 2
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Any sound above what db can cause hearing loss in human beings
Answers: 1
Biology, 22.06.2019 12:00, YoungKukie24
The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen
Answers: 2
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