Which of the following have improved practices and crop production? select all that apply

sophisticated irrigation

chemical fertilizers

chemical pesticides

increased number of farmers

Methane gas created by a cows flatulence especially in a large herd is a greenhouse gas. true or false.

Where is pericardial fulid located

Select all the correct answers. which statements fail to meet the requirements of a scientific claim? a). in the final 100 meters of a 10,000-meter race, an athlete's speed is more strongly related to anaerobic efficiency than to aerobic efficiency. b). flowers that reflect the most ultraviolet light are more likely to attract bees and other pollinators than flowers that reflect less ultraviolet light. c). the evidence supporting newton's laws of motion was accurate in newton's time, but the universe operates differently today. d). even though evidence indicates that the solar system's planets follow elliptical paths, copernicus's model involving circular orbits is true.