What is the functions or def Passive Transport
Diffusion
Facilitated Diffusion
Osmosis
Active Transport
Hypotonic
Hypertonic
Isotonic
Concentration Gradient
Transport Protein
Receptor Protein
Cholesterol
Selectively Permeable

can you me this person for the answer

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

it should be d) transitional fossils.

they show the gradualism of evolution throughout a period of time

lichens that colonize bare rock secrete acids that break down the rock and start the soil-production process. so they expose rocks