Correct answer. How many oxygen atoms does ozone consist of?
OA.
1:1
OB. 2:2
OC. 3:3
OD.
4:4
O E. 5:0
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Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

During which phase does earth see more than half of the moon's surface? 1)first quarter2)third quarter3)waxing gibbous4)waning crescent

Multicellular organisms use cell division, mitosis, for growth and the maintenance and repair of cells and tissues. single-celled organisms may use cell division as their method of reproduction. regardless of the reason for mitosis, the process ensures genetic continuity. what is the step in the cell cycle that ensure genetic continuity?