6-C (breaks off)
7-C(they secrete acid that breaks away rocks)
Answer: Respiration: releasing CO2
Explanation: Photosynthesis is happening at step 2, and decomposition is occurring at step 4 with the soil and animal waste. I just used the process of elimination.
Answer:
Fossil record, history of life as documented by fossils, the remains or imprints of organisms from earlier geological periods preserved in sedimentary rock. Their ages can be established by comparing the fossils in each layer.
