Why do many scientists believe that increased pollution may cause global warming? A. Pollution leads to a decrease of ozone, which protects the Earth from the Sun’s heat. B. Pollution includes greenhouse gases, which trap heat in the Earth’s atmosphere. C. Pollution results in chemicals finding their way to oceans, causing water temperatures to rise. D. Pollution causes acid rain, which leads to rising sea levels. Please select the best answer from the choices provided

Which of the following is true about fossils? a. the relative age of fossils cannot be determined from their position in sedimentary layers. b. fossils found in lower layers of sedimentary rock are as old as fossils found in upper layers of sedimentary rock. c. fossils found in upper layers of sedimentary rock are older than fossils found in lower layers of sedimentary rock. d. fossils found in lower layers of sedimentary rock are older than fossils found in upper layers of sedimentary rock.

Fertility and mortality rates are higher in more developed nations.

Is an official language in every north african country