Primary succession can occur in which habitat?

There are six elements that make up most of the human body. which of the following is not one of these six elements?

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

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line