Please help me What is the thickest layer of the earth?

the crust?
the mantle?
the outer core?
The inner core?

ty!

What are the types of genetic recombination

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?