Arctic Waters Warmer Than In 2000 Years

Water flowing from the North Atlanticinto the Arctic Ocean is warmer today than any time in the past 2000 years.The Fram Strait, which runs between Greenland and the Arctic archipelago of Svalbard,  have been warmed 3.5 degrees over the past 100 years. These temperatures are 2.5 degrees higher than in the Medieval Warm Period, a time of elevated warmth from 900-1300A.D.. This is proof that global warming is atypical in the context of historical climate fluctuations. Scientists found an abundance of warm water fish that rose over the past 100 years, becoming dominant over the cold water fish for the first time in 2000 years. A growing number of studies in the last decade have added weight to the theory that the warming over the past 100 years is unusual, however. Arctic Waters Warmer Than In 2000 Years

I think this is proof that we need to find a new way to live. Such as finding alternate fuel sources and planting more trees. If we don't the results will become worse and worse every year.

Spread of Deadly Virus Because of Forest Decline

In 2004 many aspen in the west started dying. Scientists thought it was because of the drought and heat wave in 2002. At first it was just destroying the land now it is spreading a new strain of hantavirus that is deadly to humans. It is called Sin Nombre Virus, the Spanish word for nameless virus. This disease is carried by deer mice mostly in sudden aspen dying areas. You can get infected by inhaling dust mixed with mouse urine, droppings, or saliva. If inhaled you can develop hantavirus pulmonary syndrome. The virus has a 40% fatality rate, but infections are rare with 20-40 annual cases in the United States. Infections remain mostly concentrated in the Southwest where sudden aspen die-back is common. The die-back is slowed down because of cooler wetter years, but aspens are vulnerable to sudden climate shifts. The die-backs are expected to be more common since the climate is starting to change. The spread of hantavirus through mice should be considered an "unintended consequence of climate change". Dr.Lehmer said, "Climate change is brining new diseases because we are disrupting plants and animals ecosystems. Spread of Deadly Virus Because of Forest Decline

I think this proves we need to be more careful about the environment. If we don't this kind of thing will become more and more common.

Link to deciduous forest website

http://deciduousforests.webs.com/apps/blog/

Parasitism

This is a picture of symbiotic relationship in my community. This particular symbiotic relationship is parasitism where one organism benefits but the other is harmed. This one is where the fleas are living and feeding off the cat, so the fleas are benefiting but the cat is harmed. There are also two other types of symbiotic relationships, mutualism where both benefit and commensilism where one benefits and the other is not harmed or benefited.

Limiting factor in my community

This is a biotic limiting factor because it helps control population. Like if it was not there it would take away many homes and lots of food so there would be less animals, but if there was another one more animals would come and live there. It also controls what plants can grow under it by limiting the amount of sunlight the plant under it can get, also its long roots take water so the plants can't get it. If it wasn't there though more plants would grow.