Cân bằng phương trình hóa học bằng electron
HCL+HNO3 tạo ra NO+CL2+H2O

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Mitosis creates two identical daughter cells from one parent cell creates four nonidentical daughter cells from one parent cell is the most common type of reproduction for bacteria is the process by which male and female reproductive cells are created

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body