PLEASE PLEASE PLEASE HELP ME The Sikhote-Alin Mountains and the Siberian tigers that live on them are separated from other tiger populations. The mountains are a barrier which are an example of a... *
-mass extirpation.
-invasive species.
-mass extinction.
-habitat fragmentation.

What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.

What best describes the structure of the declaration of independence?

Which set of terms best describes a community of miners who live out in the countryside of west virginia and use specialized geological equipment to analyze the composition of rock?