URGENT!! I need help with these questions ASAP. Please show work and please do not just write random stuff and collect points I have put this same thing up 10 times because of that :/ so please be helpful!

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

Física: un futbolista patea hacia el arco con una velocidad de 15m/ah, calcular: a)el alcance para un ángulo de tiro de 25? , b) el tiempo que el balón permanece en el aire.