Answer:
Well there are many ways for scientific models to be use like if something was small and you couldn't see it u would have to make a model of that
Explanation:
If this didn't help I'm sorry
I believe that the answer is D. lichens growing on cooled lava. Hope it helps.
The process of photosynthesis is commonly written as: 6CO2 + 6H2O → C6H12O6 + 6O2. This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.
Because the gravity of the sun keeps all planets in their orbits :3 hope I helped