Selected reading on invasive

The following pages have been written at the request of many old friends, some of them co-workers in the cause of permanent British rule over the larger part of the Great Northern Continent of America. In 1851 I visited Canada and the United States as a mere tourist, in search of health. In 1861 I went there on an anxious mission of business; and for some years afterwards I frequently crossed the Atlantic, not only during the great Civil War between the North and South, but, also, subsequent to its close. In 1875 I had to undertake another mission of responsibility to the United States....

190p chonguoinoiay1 02-04-2013 64 6   Download

England and France started in a fair race for the magnificent prize of supremacy in America. The advantages and difficulties of each were much alike, but the systems by which they improved those advantages and met those difficulties were essentially different. New France was colonized by a government, New England by a people.

199p chonguoinoiay1 02-04-2013 50 4   Download

Invasive alien plants are harmful non-native plant species whose introduction or spread threatens the environment, the economy, and society, including human health. They can be introduced into Canada from other countries or continents, or from one region of Canada to another. The current threats posed by invasive alien plants are real and growing. Why are invasive alien plants a problem? The economic cost of invasive alien plants to Canadians is enormous. Weeds in crops and pastures alone cost an estimated $2.2 billion annually.

22p lulanphuong 22-03-2012 72 18   Download