D.) 70% mammals are 70 percent water
Answer: Option A) Oxygen may not have been able to accumulate in the atmosphere
Explanation:
Ozone, O3, is an allotrope of oxygen having three atoms in the molecule instead of the usual two present in molecular oxygen. Ozone is generated from oxygen, and is the only form in which oxygen can exist in the atmosphere.
Answer:
1 for the first blank and I think 3 for the second blank
here's ur free pic of the day, Charlie! ^^
Answer:
d.
Explanation:
im working on this unit rn in school too