Biology, 19.11.2020 01:40, DisneyGirl11
efficiency is a measure of how much of the work put into a machine is converted into useful output work why can effiency never reach 100%. A. acceleration B. elasticity C. fricition D. gravity
Answers: 3
Biology, 21.06.2019 16:30, alexisbrad3107
An atom of nitrogen had seven protons in its nucleus. how many electrons does it have
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Biology, 21.06.2019 17:30, kayadaniels2
How can you keep track of variables in a science experiment?
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Biology, 21.06.2019 23:40, victoria1831
When coal has reached it hardest, darkest form, it is called select one: 0 a. sub-bituminous b. lignite c. bituminous d. antrhacite next page
Answers: 3
Biology, 22.06.2019 09:00, deandrehudson18
Which are characteristics of flukes? check all that apply. a they are free living. b they are a type of flatworm. c they reproduce sexually. d they have eyespots. e they are segmented.
Answers: 2
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