Biomes Of The World

50 Pages 12375 Words

human effects seems necessary. No part of the world is unaffected by our presence, and we have the ability to modify environments on a massive scale. Our effects, which began in small ways millions of years ago and grew in proportion to the growth of the human population, can be considered positive or negative, depending on perspective.
Most basic principles of biology can be illustrated in the context of these elements, but those that are based on relationships among two or more species do not always clearly fall within features of the environment such as climate and soils or adaptations of individual species. These principles include the broad category of trophic relationships (food webs, productivity, decomposition, nutrient cycles) and interactions such as predator-prey relationships, competition, and symbiosis.
CHARACTERISTICS OF BIOCLIMATIC ZONES
WORLD
CLIMATE. There is a temperature gradient from the equator to the poles because of the earth's orientation toward sun. The rotation of the earth and the inertia of the air above it c...