PLEASE HELP !! what similarities do you see in the basic description of the four life cycles?

Imagine a rocket launching from earth and travelling to the moon. in which order would the rocket pass through the layers of the atmosphere? thermosphere, mesosphere, stratosphere, troposphere troposphere, mesosphere, stratosphere, troposphere thermosphere, stratosphere, mesosphere, troposphere troposphere, stratosphere, mesosphere, thermosphere

Which would be the most useful source of evidence to support mcneill's contention?

Which event would lead to primary succession of a forest?