Fossil fuels are made by the decay of living things. since living things are always dying and decaying, why are fossil fuels not a renewable source of energy?

Determine the maximum r-value of the polar equation r =3+3 cos 0

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water

You hang a book bag on a spring scale and place the bag on a platform scale so that the platform scale reads 23.7n and the spring scale reads 13.8n. what is the magnitude of the force that earth exerts on the bag?