Both A and B are correct.
Answer:
Upper level
Because no one can see it but its still good and far less expensive.
Someways schools can help to improve upon reducing reusing and recycling are reducing trash by creating disposable bags like sandwich bags. Replacing juice boxes and milk boxes with disposable bottles so you scan refill. Purchase school supplies made from recycled products. Schools can set up composting programs. Recycle old computers, cell phones, they can be refurbished for reuse in your school community. Purchasing recycled paper products or eco-friendly.
Answer:
Seismology: The branch of science studies of earthquakes and the movement of waves through the earth.
