URGENT HELP PLEASE! Four different samples of sandstone were treated with water for 2 hours. The percentage of mass remaining for each sample is shown in the table. Which sample had the slowest rate of weathering? Sample W Sample X Sample Y Sample Z

Explain why components that are naturally found in air can be considered air pollutants.

Which statement explains what upwelling causes? a. upwelling causes tides to rise and fall. b. upwelling causes changes in the direction of currents. c. upwelling causes nutrients, minerals, and tiny organisms to rise. d. upwelling causes currents in the pacific ocean to change direction. i think the answer is c.

England is a small country. why is english spoken in so many places worldwide? a. england colonized many places throughout the globe. b. the english language is the easiest language to learn. c. england is located near the prime meridian, making it a popular tourist destination. d. because england is an island nation, it has had many visitors.