There can be advantages to using fossil fuels. what is one advantage? a)fossil fuels are a nonrenewable source of energy, because they are primarily made from the remains of ancient plant and life matter. b)fossil fuels are inexpensive and readily available with existing equipment. c)the burning of fossil fuels releases carbon dioxide in the environment, contributing to climate change. d)the burning of fossil fuels releases harmful chemicals into the environment.

B)Fossil fuels are inexpensive and readily available with existing equipment.

Explanation:

The fossil fuels are the fuels that are produced inside the heap of the earth crust. These are produced as a result of the geological and biological processes occurring under the surface of earth. These includes the hydrocarbons such as coal, crude oil, natural gas which are formed from the dead remains of the plants and animals.

These fuels are the non-renewable source of energy and these produce large amount of carbon dioxide on burning, this can lead to global warming.

The main advantage associated with these fuels is that they are inexpensive because of the appreciable volume of availability in some regions of the world.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products