HELP!! The main source of energy for living things on Earth is

1- combustion of fossil fuels
2- oxidation of dead organisms
3- solar energy
4- geothermal energy

200. ml of 3.00 m nacl solution is diluted to a final volume of 500. ml. what is the molarity of the final solution?

Why are people not able to skip a dive to the deepest part of the ocean

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397