Can someone with this earth science?

2. The troposphere is the first layer above the surface and contains half of the Earth's atmosphere.

3. nitrogen

4. hydrogen and oxygen

5. 2.09%

6. 20.95%

7. 2.33%

8. titanium at 0.61%

that's all i can type for now

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.