Answer:
Respiration (breathing) is the way your body gets oxygen into the lungs from the air outside. Cellular respiration describes how your cells make ATP - a molecule used to provide energy for chemical reactions.
Explanation:
I hope that this helped you ;)
I am pretty sure its called the "Biological Soup theory"... I hope I helped!
Answer:
The atmosphere is a closed system
Explanation:
Because inside the atmosphere open system
Because plants go through a cycle(the cycle is seed, seedling, plant, flower and tree.) and it takes time for the plant food, water, and nutrients to go though the plant.
