Did you know water is most dense at 4°c (39°f)? that is why lakes don't freeze to the bottom. if water was most dense at 32°f then lakes would freeze to the bottom in the winter. considering the density of water changes as its temperature changes, what percentage of sea level rise is from the expansion of sea water as its temperature rises (vs. melting glaciers)? question 14 options: 10% 20% 50% 70%

which elements do geologists measure to determine the age of an organism’s remains? check all that apply.

carbon-14

nitrogen

carbon-12

it is very hard for the climatologists to precisely predict how will the global temperatures be changing so there's lots of models, some of which differ significantly, this is due to multiple factors, and probably the most important is the human activity.

humans have been a key factor in climate change around the globe since the start of the industrial revolution, and in the past few decades the consequences are becoming more obvious. there's lots of emission of pollutants in the atmosphere as well as changing the environment on the surface itself, so it's really hard to predict how will that go in the future because there's some countries that are reducing the damage and are going towards green energy, while others are stubbornly continuing with pollution and damages to the environment.