Biology, 15.07.2019 18:00, rustjallison9928
Iwill give 20pts, ! some fuel cells are powered by hydrogen. scientists are looking into the decomposition of water (h2o) to make hydrogen fuel with the of the sun’s energy. what challenge do scientists face with this task? a. decomposing water requires a high activation energy. b. the sun isn't a renewable resource. c. decomposing water results in toxic byproducts. d. scientists are uncertain what to do with the excess oxygen.
Answers: 1
Biology, 22.06.2019 02:50, andybiersack154
Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above
Answers: 2
Biology, 22.06.2019 11:00, elpeke102p73fz3
Which short-term environmental changes would a very small asteroid or comet impact on earth most likely cause? check all that apply. flooding extinction craters on surface changes in weather patterns death of organisms and populations
Answers: 2
Biology, 22.06.2019 11:10, allisonpierce1787
Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water. b. they use chlorophyll and oxygen to make carbon dioxide and water. c. they use sunlight, water, and carbon dioxide to make sugars. d. they use sunlight, water, and oxygen to make chlorophyll.
Answers: 1
Iwill give 20pts, ! some fuel cells are powered by hydrogen. scientists are looking into the decomp...
Mathematics, 18.06.2020 04:57
Mathematics, 18.06.2020 04:57
History, 18.06.2020 04:57
Mathematics, 18.06.2020 04:57
Chemistry, 18.06.2020 04:57