Which statement best describes a human influence on the biogeochemical cycles? increased eutrophication caused by high levels of nitrogen and phosphorous increased nitrates available due to inaccurate methods of denitrification increased global warming due to alternative energy sources increased amount of water that is available to freshwater ecosystems

Calculate the number of moles of ethane in 100 grams

Plz mark brainliest 30 points1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s.2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

Which of these is a physical property