Human disturbance, slope aspect, the density of fall log and stub and rock percent sum up the main habitat characteristic of the forest musk deer.

林麝生境的主要特征表现为人为干扰、坡向、倒木和树桩密度、基底岩石面积比等方面。

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The North Slope natural gas hydrates make up 11.5 percent of the volume of gas within all other undiscovered, technically recoverable gas resources in the United States -- frozen or not, the USGS estimated.

CNN: Study: Tap natural gas from Alaska's frozen areas