This gas is found in the stratosphere but not in the troposphere. what is it?

a) ozone.

b) oxygen.

c) nitrogen.

d) carbon dioxide.

Agroup of students are walking in the park, and one of them takes a picture of a pollen grain that is being blown by the wind. what caption can the student use for this picture? fahrte "littl1111111nimmt-hhhfull film# # #gene mutation in actiongene flow at workgenetic drift as it happensnatural selection in progresshii

What are the formed elements (cell or parts of cell) in blood and what are their functions ?

Based on anatomical similarities, to which modern animal is dr. digger’s creature most closely related?