A puddle of dark liquid under a car indicates a leak in the oil or transmission fluid. Another warning sign of car trouble is uneven wear on tire treads. If the outer edge of the tire tread wears out before the center, the tire is under-inflated. The most significant early warning signal, however, is less and less mileage per gallon. Lower fuel economy is caused by a variety of problems ranging from a clogged air filter to ignition or carburetor trouble. The sentence that best expresses the implied main idea is:. a. Several warning signs can indicate car problems.
b. A puddle of dark liquid under a car is a sign that a car has an oil or transmission-fluid leak.
c. The most significant warning signal of a car problem is getting lower mileage per gallon of gas.
d. Various problems may cause a car's fuel economy to decrease.

6-the us is not democratic (facts/data/information/reason to prove the us is undemocratic)

Doing the text now can someone me

Which of the following will increase a population's growth rate? read the following scenario and answer the question(s) below. population growth is at the root of many serious environmental problems. from the ancient babylonians thousands of years ago, to thomas malthus two centuries ago, to present day neo-malthusians, humans seem to possess an awareness of earth's limitations in the face of growing populations. today, our ability to accurately quantify and monitor population growth is very sophisticated. we can measure growth and make predictions about world growth with mathematical and computer models. despite long-lasting, rapid global population growth that is only recently starting to show signs of slowing, we have thus far been able to avoid global catastrophe. can we continue to avoid disaster? which of the following will increase a population's growth rate? increased urbanization increased industrialization increased immigration decreased immigration increased emigratio