Copied The Changing Global Environment
The Changing Global Environment
We know a great deal about historical climate and its variations from various geo logical studies. There are two points worth remarking on. One is that the climate changes frequently and radically, but that the degree of variation and even sense of variation depends on the time scale which we are considering. Secondly, that this is a most unusual geological period for the Planet Earth; we are living in a period of mountain building and glaciations, whereas during most of the last 250 million years (m.y.) there was little ice and little topography. A good view of climate change of the last hundred m.y. can be gained by looking at the paper of Kellogg. We are now in a period of extensive glaciations. The previous interval occurred 300 to 250 m.y. ago, when even the Sahara was glaciated. (Of course, it was at that time near the position of the South Pole; we know that 300 m.y. ago the continents had not broken apart and formed one land mass.) Apparently between 250 and 20 m.y. ago there was little ice on the Earth, even at Antarctica. Continental basins were flooded by shallow seas. This was the period when plant life and marine life proliferated and when most of our fossil fuels were laid down.
Price Comparison
| Seller | Contact Seller | List Price | On Sale | Shipping | Best Promo | Final Price | Volume Discount | Financing | Availability | Seller's Page |
|---|---|---|---|---|---|---|---|---|---|---|
|
BEST PRICE 1 Product Purchase
|
|
$39.99 | $39.99 |
|
$39.99 | See Site | In stock | Visit Store |
Reviews
Questions & Answers
Vergleichende Reproduktionsbiologie der Wirbeltiere
$59.99
China Ethnic Statistical Yearbook 2016
$109.99
Chemie im Alltag
$59.99
Demographic and Family Transition in Southeast Asia
$109.99
Gestalttheorie in der Modernen Psychologie
$59.99
Anlagerung von thylen an Steinkohlen (Steinkohlenalkylierung)
$59.99
Doing Gender
$64.99
Sanctions as Economic Statecraft
$129.00
Controlling in mittelstndischen Unternehmen in Russland
$64.99
Heterocyclic Antitumor Antibiotics
$169.00
The Structure and Content of Molecular Clouds
$84.99
Jugendliche: Realittskontrolle und Gewalt
$64.99
Soviet Robots in the Solar System
$39.99
rztliche Werthaltungen gegenber nichteinwilligungsfhigen Patienten
$44.99
Fundamentals of Computation Theory
$54.99
ber Hirten-Genre in der antiken Kunst
$69.99
Psychoanalysis,Psychiatry and Modernist Literature
$115.00
Philosophical Principles of the History and Systems of Psychology
$99.99
Ben Jonson, John Marston and Early Modern Drama
$84.99
Handbook of Regional Science
$1,099.99
Service-Oriented Computing - ICSOC 2008
$84.99
The Palgrave Handbook on the Philosophy of Friedrich Schiller
$219.99
Seasonal Landscapes
$109.99
Compounds of Arsenic, Antimony, and Bismuth
$84.99
Open Digital Innovation
$99.99
Big Data, Cloud Computing, and Data Science Engineering
$179.99
Clay Microstructure
$169.99
On Scientific Discovery
$169.99
Tragwerke
$54.99
Trade and the Environment
$39.99
First Philosophy
$179.99
Kontinuumsmechanik
$44.99
Data-Driven Clinical Decision-Making Using Deep Learning in Imaging
$159.99
Universities, Disruptive Technologies, and Continuity in Higher Education
$99.00
Cultural Forms and Practices in Northeast India
$129.99
Der zndende Funke
$39.99
Electrochemical Exfoliation of Graphene and Its Derivatives
$119.00
Chemical and Physical Behavior of Human Hair
$329.99
Semidistributive Modules and Rings
$39.99
Spring: Catching Fireflies
$3.71
