Essays Tagged: "animal species"

Agriculture and its impact on ecosystem

quent export of biomass from the ecosystem.2.Removal of the original plant vegetation (and also the animal s) inhabiting the area in order to clear up the land for growing crops. This lead to the loss ... ests:-Pests are organisms that consume the agricultural products or degrading their quality.-Can be animals (mostly insects or annelids) or plants (weeds)-They reduce the yield of crops.Chemical contr ...

(6 pages) 306 1 4.6 Mar/2002

Subjects: Science Essays > Environmental Science

Life-span development chap 3 notes

on the principles of evolutionary biology to explain social behavior1.Compared tens of thousands of animal species that have evolved some form of social life* developed laws of evolution and biology o ... cial life* developed laws of evolution and biology of social behavior* clarify the relation between animal and human behavior* focused attention on the costs and benefits of behavior* directed inquiry ...

(3 pages) 115 0 3.4 Sep/2002

Subjects: Social Science Essays > Psychology

The Causes and Effects of Global Warming

sts it is occurring. It explains the effects of global warming, including the impact on ecosystems, animal species, plant species, and human species. The paper ends by offering possible solutions, and ... these changes. The Earth could see an increase in extreme weather and will have impacts on humans, animals, and ecosystems (Lutz 24, Godrej 4).There is a lot of uncertainty as to how much and how fas ...

(11 pages) 697 1 5.0 Dec/2002

Subjects: Science Essays > Environmental Science

Sustainable developement of the Brazillian rain forest

ht to have covered much more than this area many years ago) yet houses half of the earths plant and animal species, these species form their own ecosystems within the forests and hold their own partic ... atmosphere has been likened to a laboratory hot house and its abundance and richness of plants and animal species justifies this likeness.Rainforests are usually made up of several different layers, ...

(5 pages) 102 0 4.1 Dec/2002

Subjects: Science Essays > Forestry

An argumentative essay on why we should conserve our environment and what good it could bring us

Why should we conserve plants and animals?I am arguing for conserving plants and animals. I will discuss how plants and animals have a ... served.The word "conserve" means preservation, especially of the natural environment. In plants and animals case, it means,To keep in existence, to retain and to keep safe from harm or loss.1Thousands ... a source of food.2Every living organism on this earth is dependant on another. Humans rely on farm animals such as pigs, cows, sheep and chicken, as well as many other mammals. Animals such as leopar ...

(6 pages) 421 3 4.5 Mar/2003

Subjects: Science Essays > Environmental Science

Amazon rainforest, past, present and future uses.

most biologically diverse ecosystems in the world, containing more than 50% of the worlds plant and animal species, yet only accounting for 7% of the Earth's land surface.A rainforest comprises of fou ... ceives the most sunlight, and can range in heights of 20 to 50 metres. This level contains the most animal life including birds, insects and small mammals.Just below the canopy is a mid-story level, w ...

(9 pages) 136 0 4.3 Sep/2003

Subjects: Science Essays > Environmental Science

A Report on Bats.

A Report on BatsINTRODUCTIONThere is an abundant amount of animal species in theworld. They all have adapted and evolved to survive intheir surroundings. Some ... survive intheir surroundings. Some have grown fins, others legs, andstill others wings. One of the animals that has grown wingsis the bat. The bat is a truly great creature. It has allthe characteris ... ing fat in autumn. Then they fall into asleep more extreme than their normal daily sleep. As inmost animals, when hibernating their major bodily functions,such as heart-rate and breathing, are suppres ...

(6 pages) 44 1 3.4 Nov/2003

Subjects: Science Essays

"The Wild Horse Controversy" in Nevada and the western states.

Wild Horse ControversyWild horses by most standards are not wild animals at all but domesticated animals gone feral. Wild horses are non-native animals that populate ... ve animals that populate the Western United States. Wild horses compete for habitat with other wild animal species, such as elk, mule deer, and pronghorn antelope. However, they also have to compete w ... as elk, mule deer, and pronghorn antelope. However, they also have to compete with other non-native animals like cattle, sheep, and goats. Not only do they have to compete with these non-native animal ...

(5 pages) 38 0 3.0 Nov/2003

Subjects: Social Science Essays > Controversial Issues

The goal of this research paper is to describe rain forests, demonstrate some of the causes and effects of deforestation, and explain what is already being done to prevent it.

n seven percent of the land surface on Earth, they contain more than fifty percent of its plant and animal species. When first discovered, many creatures of rain forests were feared, and many myths em ... a-126b).Rain forest ecosystems are some of the oldest in the world, and they contain more plant and animal species than any other habitat (Losos). They hold over 3000 species of edible fruits, over 15 ...

(6 pages) 103 1 3.4 Dec/2003

Subjects: Science Essays > Biology

Tropical Deforestation

ithin 100 years-causing unknown effects on global climate and eliminating the majority of plant and animal species on the planet.Why Deforestation HappensThere are many reasons for deforestation. Most ... e in the area. The loud noise and human talk will inevitably petrify the birds, insects, and larger animals such as monkey's millions of different varieties of animals are killed each year by this pro ...

(15 pages) 225 0 3.5 Mar/2004

Subjects: Science Essays > Biology > Plant Biology

How animals adapt to environment they live in.

All animals face the same problems in adapting to the desert. They must find shelter from daytime heat a ... ell as find food and water, which are often scarce. Yet, in spite of these extreme conditions, most animal species are represented in the desert environment, even some we typically associate with temp ... esert environment, even some we typically associate with temperate or wet surroundings.InvertebratesAnimals without backbones are called invertebrates. They include simple desert animals such as worms ...

(19 pages) 96 0 3.2 Mar/2004

Subjects: Science Essays > Biology

Why people may be concerned about lack of genetic variety in our food crops.

uinas-Alcazar states that half of the worlds food today comes from just four plant species and five animal species. If future generations do not have enough genetic variety they may not be able to kee ...

(1 pages) 19 0 3.0 Mar/2004

Subjects: Science Essays

We should protect our precise animal resources

n of natural habitats, genetic erosion and the rarity, even disappearance, of a number of plant and animal species.As the pace of civilization accelerates, more people, taking more space, needing to u ... ural resources, engaging in ever-growing consumption, impose severe deterioration on the habitat of animals. An increasing number of people come to realize that the disappearance of animals will resul ...

(1 pages) 48 1 3.0 Apr/2004

Subjects: Science Essays > Biology

Endangered Species

In California there are two hundred eighty-nine animals and plants on the endangered species list: one hundred eleven animals and one hundred sevent ... cies Act was originated in 1973 to fight the depletion of all endangered species. Before a plant or animal species can receive protection through the Endangered Species Act, it must first be on the fe ... , the dodo bird and many other species might not have become extinct. Another example of an extinct animal is the dinosaur, which became extinct in the late Cretaceous and late Triassic periods. Had s ...

(3 pages) 115 1 4.6 Jun/2004

Subjects: Science Essays > Forestry

Brazil, Enviromental Factors in Short.

d's remaining tropical forests and, besides providing shelter to one tenth of the world's plant and animal species, acts as a significant mechanism for removing excess carbon dioxide from the atmosphe ... for less than 7 percent of the terrestrial surface, they are home to half or more of all plant and animal species. Also, tropical deforestation is a major component of the carbon cycle. Deforestation ...

(3 pages) 94 0 4.6 Sep/2004

Subjects: Area & Country Studies Essays

Preserve our wildlife

iving within it, the government must take action.That is the case with the extinction of plants and animals. Why should they goextinct?Over 34,000 plant species and 5,200 animal species around the glo ... endangerment are habitat destruction, commercial exploitation, damage caused bynonnative plants and animals introduced into an area, and pollution. Of thesecauses, direct habitat destruction threatens ...

(2 pages) 58 0 3.3 Oct/2004

Subjects: Science Essays > Forestry

Saving our Environment

ning the health of our planet, the land we live and work on, the water supply, the ozone layer, the animal species as well as the health of our species. With this it is easy to say "The problem is too ... sponsibility or making changes in our daily life. It is not too late. Our environments' health, the animals of the worlds' health and our own health depends on what we do today, tomorrow, and long into the future.

(4 pages) 116 0 3.9 Oct/2004

Subjects: Science Essays > Environmental Science


ears-causing unknown effects to the global climate and the elimination of the majority of plant and animal species on the planet.Deforestation occurs in many ways. The majority of rain forest cut down ... long roads. Forest fragments are isolated forest pieces left by deforestation, where the plants and animals are cut off from the larger forest area. Regrowth-also called secondary forest-is abandoned ...

(4 pages) 124 2 4.3 Apr/2005

Subjects: Science Essays > Biology

Animal Rights- Do Animals have the same rights as Humans

Everyone has a right, we human begins have a right. So why shouldn't animal have their rights? Human beings are no different from other animals, with no divine or elevat ... ivine or elevated nature which makes us distinct. Human beings are ethically bound not to use other animals for their own selfish purpose. If human beings are no different from other animals, then lik ... are no different from other animals, then like all other animals is it our nature to kill any other animal which serves the purposes of our survival and well-being, for that is the way of all nature. ...

(4 pages) 105 1 3.0 Apr/2005

Subjects: Social Science Essays > Controversial Issues > Animal Testing


ent of the Earth's surface, they can provide habitat for between 50 and 90 percent of its plant and animal species. In 1990, tropical rainforests totaled some 1.7 billion hectares. Half of the world's ... on this layer, although large mammals like gorillas and jaguars are also found there. Many smaller animals, including anteaters, lemurs, and tree kangaroos live in the understory. This is also where ...

(7 pages) 71 0 3.7 Apr/2005

Subjects: Science Essays > Forestry