Risk of aids lowered by 60%

"...the United Nations agency fighting the disease, said about 3.2 million African men had been voluntarily circumcised since word began spreading in 2007 of studies showing that it lowered the risk of aids by about 60 percent..." (New York Times, McNeil) Studies show that  circumcisions dramatically lower the risk of aids. Unfortunately "It does not protect gay men engaged in receptive anal sex, believed to cause most infections in the United States." This groundbreaking discovery could rapidly reduce aids in Africa as well as the United States.

Watersheds

Channel width potash: 50ft
Channel width Cent.: 1.98m
Avg Depth potash: 5.50ft
Avg Depth Cent.: 4.2in
Velocity potash: 109ft/sec
Velocity Cent. : .332 ft/sec
PT index rating Potash: Intolerant (poor)
PT index rating Cent. : Intolerant (poor)

Invasive Species in Vermont

Invasive Species in Vermont

Genevieve Dahlen

Science

In Vermont, there are a few common invasive species that most people are not aware of. Burning bush is an example of one of these species. Burning bush is popular for its bright red leaves. It is grown in many gardens and yards. Birds carry their seeds and deposit them in natural areas. The seedlings put compete native plants and destroy the ecosystem. In my opinion, I do not think burning bush is needed in Vermont, mainly because its not good for the environment. Vermont is beautiful enough with its foliage, there is no need for flashy red bushes with thorns. Another invasive is the Norway maple. The Norway Maple originated in Europe and western Asia. It spreads by the wind dispersing its seeds. These trees develop dense strands that out compete native trees and shade out forest shrubs and plants. A Norway maple is distinctively identified by its large leaves, much larger than a native maple. Also, Japanese Knot weed is very invasive. It crowds out native species and grows rapidly. It is hard to wipe out, the roots need to be pulled in order to kill it. I think that people need to bring awareness to these invasive, so we do not wipe out our native plants and trees we love so much.

Terrarium

The temperature of the terrarium is 69 degrees. The side without the disturbance measures at 16cm. The side with the disturbance measures at 14cm.

Centennial woods

In centennial woods we were able to discover an area was once a field.
We were able to tell because the pine trees were older and taller than the maple trees. We predicted the pine trees were 100-150 years old. We also predicted the maple trees would someday grow over the pine trees and eventually kill off the pine trees.

Disturbance

The measurement when I first built my terrarium was 19.5cm. My measurement today was 16cm. My hypothesis that the compost would shrink was correct. As a disturbance, I mixed half my terrarium. I hypothesize that the more you mix the compost, the faster it decomposes, causing it to lower faster than the dirt that has not been mixed.

Leaves

Eastern hemlock:

Similar to white pine because of its needles. Different from sugar maple, wild grape, red oak, black walnut and fern because it's not a leaf.

White pine:

Similar to eastern hemlock. Different from the other leaves.

Sugar maple:

Similar to wild grape because of their shape, but different in size. 

Wild grape:

Different from the fern, doesn't have multiple ferns growing off the stem

Red oak:

Similar to the wild grape, they're both large leaves.

Black walnut:

Similar to the fern because of its multiple leaf/stem growth off the stem

Fern:

Similar to the black walnut and wild grape in size.