Fossil fuels formed naturally on Earth. Why aren't they thought of as renewable resources?
a. fossil fuels were formed during times when dinosaurs roamed Earth and because dinosaurs are now extinct, they can no longer roam
b. fossil fuels take such a long time to form naturally
c. fossil fuels do form through processes that still operate currently
d. fossil fuels form as a result of asteroid impacts, which do not occur very frequently
e. both b and c are reasons fossil fuels are thought of as nonrenewable
Answer: b. fossil fuels take such a long time to form naturally
You might also like to view...
Which of the following are components of Chargaff's rules of bases?
A) purines = pyrimidines B) C + T = A + G C) A + T = G + C D) G = C E) all of the above
The respiratory surfaces of mammalian lungs are called
a. alveoli. b. bronchi. c. tracheae. d. bronchioles. e. air sacs.
An organ is made up of
a. a single type of tissue. b. glandular tissue. c. 2 or more tissues working together to perform a specific task. d. muscle tissue that has differentiated from stem cells. e. none of these.
A weak bond or polar attraction between the hydrogen of one compound and compounds containing oxygen or nitrogen is called a: