Biology, 26.06.2019 18:30 lilybrok04
Why is aluminum considered a nonrenewable resource? a. because aluminum is created naturally b. because aluminum can be used over and over again c. because new aluminum deposits form very slowly d. because humans can produce new aluminum
Answers: 1
Biology, 22.06.2019 00:30
Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?
Answers: 1
Biology, 22.06.2019 11:30
According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes
Answers: 3
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