The answer to this question is B.
Answer:
I am going to answer the questions in one brief summary of fossil fuels.
Fossil fuels are non-renewable, meaning one day they will run out.
Fossil fuels are reliable, meaning rain or shine we can use them.
Fossil fuels emit greenhouse gases, causing our world to warm up.
Answer:
A. because immune, nervous, and muscle system cells require proteins for structure and regulation.
Compounds are made up of atoms that are bonded together. In a mixture, the atom or compound in the mixture are physically combined, therefore not bonded together. To put it simply, mixtures keep their properties while compounds do not.
I think it called Biodiversity
