I believe it is A) Nucleus
Hi~~
Your question is related to the rock cycle :3
Weathering and erosion are physical processes that can turn sedimentary rock into sediment, by breaking them down.
Lazzaro Spallanzani's experiment is a good example of creativity, because he designed the experiment and found a new way to explore gastric juices. So...
Lazzaro Spallanzani, an Italian biologist and physicologist, was the first scientist to dissect animals for digestion trials.
He used the animals as models for humans digestive system, designed the experiment, and was the first to interpret the process of digestion.
I hope that helped ^_^
