PLEASE HELP WILL GIVE BRAINLIEST
After letting his soil sample sit in water for an hour, Mark concludes that just one type of material made up the soil. Jack concludes that the soil had several different materials, each with a different weight. Based on the results of your experiment, whose conclusion do you support and why?

The graph shows the amount of global warming happening in different ecosystems. which populations of organisms will likely decline the most as a result of climate change, and why? a.coral reefs because of the loss of the symbiotic algae living within their bodies b.penguin populations because the fish they eat will move into warmer waters c.mountain-dwelling birds because rising sea levels will relocate their food sources d.large cats in the rainforest because of decreased habitat loss for their prey