How many O2 molecules are required for two glucose molecules to undergo cellular respiration? 18
6
12
2

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 percentage of light hits earth's surface directly?

What organs comprise the respiratory system of a bird