SCI 200--Practice Milestone Unit 4 Questions and Answers Rated A

Julie sighed and closed her textbook. She was convinced. "Wow, global warming really is real," she said to her roommate. "What?" yawned Elena. "Nah, I don't think so. Doomsayers are always going on about that." Julie opened the textbook again. "Look at this photograph of glaciers. Look at how much has melted in just the last 50 years." Elena glanced at the photo without much interest. "Glaciers are like miles and miles of ice. Not enough of them is going to melt to make a difference." Choose the best response to Elena's assertion from the options below. Sea levels have always been on the rise. Sea levels fluctuate for many years. Glaciers melt and re-form without affecting sea levels. Glacial melt and rising sea levels are directly linked. Glacial melt and rising sea levels are directly linked. Of these sources of greenhouse gases, which produces the least? Industry Agriculture Energy supply Forestry Agriculture