What are the nonspecific and specific defenses in the immune system

An atom of nitrogen had seven protons in its nucleus. how many electrons does it have

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

What organ is the first to receive nutrients that have been absorbed from the digestive tract?