How do scientists learn about past climate ?;

1. What were you looking for in the artic ocean? In the artic ocean we were looking for how the climate was 10, 000 years ago .  At the bottom if there was little Ice back then if you found a lot of pollen you find a lot of ice.
2. What is a piston corer? A piston corer the tool made to go to through hard and deep floor  to get to the bottom of the ocean floor .
3. What is the PVC corer ? A PVC corer is a type of plastic that they feeeze and put inside the metal corer. It h as to get shipped to the ship .
4. What is the orange suit? A mustang suit allows ou to stay warm and keep you up to float. The mustang suit have a bright light on the pocket to find you if you falll over board.

Climate Change

1. How has the concentration of carbon dioxide in the atmosphere changed over the last 100 years ? The concentration of carbon dioxide in he atmosphere has changed a lot in the last 100 years .
2.How have temperature,ice cover, and sea level changed over the last 100 years? The temperature in sea level increased and the ice cover decreased.
3. What is the scientific consensus and does the data support this ?


1.whats the cause of the current global warming trend? The cause of the currentglobal cwarming trend is the human expansion of the greenhouse effect.
2.what are the gasses that contribute to the greenhouse effect? Water vapor , carbon dioxide, methane, nitrous oxide, and Chlorofluorocarbons are the gasses that contribute to the greenhouse effect.
3. What are some consequences of changing the natural atmospheric greenhouse? Some consequences are earth became warmer, regions may welcome warmer temperatures . Warmer conditions will probably lead to more evaporation and precipitation.Clouds drop more rain,sleet,or snow.A stronger greenhouse effect will warm the oceans and partially melt glaciers and other ice rise in sea levels, more co2 will be absorbed by the ocean. You will find warmer plants in warmer areas.
4.Why is solar irradiance not a reason for climate change ? Solar irradiance is not a reason for climate change because the sun has increased its heat energy and sending it to earth. The average amount of energy coming from the sun either remained constant or increased slightly. The top of earth is cooler than the rest of the planet.

Is climate change a Hoax?

 People deny that humans are the cause of the climate change today . I disagree i think humans are the cause of climate change today . I did research and according to this website http://goo.gl/bdcb32 there was information on how humans are the cause of global warming today . This is one way they explained how humans are the cause."Most climate scientists agree the main cause of the current global warming trend is human expansion of the "greenhouse effect warming that results when the atmosphere traps heat radiating from Earth toward space".