Question: top corner inflect inward.
Answer: --> Top corner inflect inward.

Question: i had a physical reaction when the zero tolerance was revoked.
Answer: --> I had a physical reaction when the zero tolerance was revoked.

Question: by comparing paleo stomata densities with current ones reserchers can make some estimate of the relative co2 levels in past times comparaed with the present.
Answer:
--> By comparing paleo stomata densities with current ones reserchers can make some estimate of the relative CO2 levels in past times comparaed with the present.