The Last Days of Mankind: Ecological Survival Or Extinction |
From inside the book
Results 1-3 of 75
Page 101
... trees . In practice this means cutting trees at a younger age than good silvics ( the ecology of trees ) would approve . Cutting , says Mr. Robinson , should be done frequently ... tree . It killed about half the trees left The Forests 101.
... trees . In practice this means cutting trees at a younger age than good silvics ( the ecology of trees ) would approve . Cutting , says Mr. Robinson , should be done frequently ... tree . It killed about half the trees left The Forests 101.
Page 102
Ecological Survival Or Extinction Samuel Mines. maining tree . It killed about half the trees left in the national forest section . In the virgin forest it burned only a few patches of new growth and a few dead trees , leaving virtually ...
Ecological Survival Or Extinction Samuel Mines. maining tree . It killed about half the trees left in the national forest section . In the virgin forest it burned only a few patches of new growth and a few dead trees , leaving virtually ...
Page 103
... trees around his home . If man's progenitors descended from the trees to walk upright ( and the construction of our hands with an opposed thumb argues a development for grasping branches ) , it seems to have left us with mixed racial ...
... trees around his home . If man's progenitors descended from the trees to walk upright ( and the construction of our hands with an opposed thumb argues a development for grasping branches ) , it seems to have left us with mixed racial ...
Contents
An Introduction | 9 |
Rivers Dams and Floods | 27 |
Water Pollution and the Great Water Shortage | 49 |
Copyright | |
11 other sections not shown
Other editions - View all
Common terms and phrases
acres Agriculture Alaska alligators American animals bill birds building California Canyon cars chemical Congress conservation conservationists cost cougars created Creek damage decibels Department dieldrin Disney dumped East Meadow ecology Engineers environment Environmental estimated Everglades Everglades National Park expressway Federal feet fish flood Florida Forest Service gallons Governor harp seal Hickel highway Hudson hunters increased industry insecticides insects Interior Island jetport killed Lake Lake Okeechobee Lake Powell lumber companies miles million Mineral King mountain National Forest National Park natural Okeechobee oxygen Park Service percent pesticides plankton plant pollution population pounds predators problem proposed public lands recreation redwood reservoirs river road salmon Save-the-Redwoods League says Secretary Sequoia National Park sewage Sierra Club species spraying square miles stream supply timber tion traffic trees Udall Valley Vällingby wild wilderness wildlife wood York