Nuclear warfare....................................
Explanation:
In geology, petrifaction or petrification is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals.
Answer:
we trade to get better material. we trade for food and merchandise.
Answer: Johnson spent the following years speaking to students about her extraordinary them to pursue stem education. Some things will drop out the public eye and will go away, she said. There will always be science, engineering and technology.
Explanation: Give me the brainliest
C i believe i might be wrong