FOSSIL FUELS FORMED DEEP UNDERGROUND FROM... A. DEAD PLANTS AND ANI...

2. - DE THI THU TN CHO HS MIEN NUI
Tiếng Anh DE THI THU TN CHO HS MIEN NUI
2. Fossil fuels formed deep underground from... A. dead plants and animals B. earth and rock C. oil and gas D. heat from the sun