Hlp. plaaasee 6th grade schience question. Which of the Global winds produce temperate air? Which produces Tropical Air. Please answer in the correct order that they are asked or label which ones you are referring to.

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.

Calculate the concentration of all species in a 0.165 m solution of h2co3.