Essays Tagged: "insects"

Purple Loosestrife - on the invasive qualities of purple loosestrife and the consequences

s blanket silences the expected sounds of the wetland environment, birds chirping, ducks splashing, insects buzzing and animals thriving. This unnatural silence is disturbing, the favourite flowers th ... control purple loosestrife. (Canadian Wildlife Federation 1993, 42) As a result of this study three insects were approved for release in the USA in June of 1992 and at this time the insects were also ...

(12 pages) 81 0 4.3 Jun/1996

Subjects: Science Essays > Environmental Science


to alter behavior in other organisms of the same species. Pheromones are a class of compounds that insects and animals produce to attract members of their own species. These compounds are secreted by ... ts but are never-the-less effective in producing instinctive behavior when detected by the nose. In insects and animals, most sexual and social behavior is controlled by pheromones.Humans have used pe ...

(2 pages) 49 0 4.0 Dec/1996

Subjects: Science Essays > Chemistry


species, through species, on up to the array of natural ecosystems.' This includes plants, animals, insects, fungi, bacteria, and all microorganisms. All of these things create what is known as a web. ... take for granted, for example, breathable air pure water, and pest control through birds, bats, and insects. In the Eastern U.S., most of the old growth occurs in small isolated areas. Scientist have ...

(2 pages) 294 2 4.4 Apr/1997

Subjects: Science Essays > Environmental Science

Surface Tension

se edges where the liquid is in contact with the wall of avessel. Because of this property, certain insects can stand on the surface of water. A razorblade can also be supported by the surface tension ...

(2 pages) 48 0 4.8 Jan/1997

Subjects: Science Essays > Physics

Anthrax This essay is simply entitled Anthrax. It is a brief description of the bacteria Anthrax and its effects on various aspects of life.

by drinking contaminated water, eating infected dead animals, and getting bitten from blood-sucking insects. The symptoms that animals experience once diagnosed with the anthrax disease include fever, ...

(1 pages) 176 5 3.3 Apr/2002

Subjects: Science Essays > Microbiology


tact skin, hence it cannot be spread through informal contact. AIDS has not been found to travel in insects or tame animals. In pregnant women, the virus only infects the infant near or at the time of ...

(3 pages) 47 0 1.5 Mar/1996

Subjects: Humanities Essays > Health & Medicine > Diseases

Fire Ants

s. Inhabitants of the Southeast who have ever stood unwittingly atop a fire ant mound know that the insects are aptly named. When the ants sting it creates a sensation similar to scorching caused by a ... re ant venom contains alkaloids and a relatively small amount of protein compared to other stinging insects. The alkaloids in the venom kill skin cells; this attracts white blood cells, which form a p ...

(9 pages) 76 0 3.9 Mar/1996

Subjects: Science Essays > Biology

this essay compares the skeletal system between a tiger and an ant

have an endoskeleton. That is to say that their skeleton on the inside of their body as opposed to insects which have an exoskeleton that covers their entire body.A Tiger typically reaches a height o ... internal organs and muscles witch are connected to it from the inside.The bodies of ants, like all insects, are divided into three sections: the head, the thorax, and abdomen. The head of an ant is l ...

(3 pages) 53 0 4.2 May/2002

Subjects: Science Essays

The Peregrine Falcon

n falcon came close to extinction. Most of the damage was done by poisons that farmers used to kill insects. The worst poison was DDT. By the time naturalists learned of DDT's effect on wildlife, it w ...

(7 pages) 52 0 3.7 Nov/1996

Subjects: Science Essays > Biology

Diversity of Plants

n years ago, trees had evolved and formed forests, within which the diversification of vertebrates, insects, and fungi occurred. Roughly 266,000 species of plants are now living.The two major groups o ... viduals. Flowers, which are the most obvious characteristic of angiosperms, guide the activities of insects and other pollinators so that pollen is dispersed rapidly and precisely from one flower to a ...

(11 pages) 124 0 3.0 Apr/1996

Subjects: Science Essays > Biology

Great essay on philisophical points of what it means to be a human being.

pendent on its parents right away. It needs nourishment, love and shelter from its parents, whereas insects can be born alone and left to depend upon themselves for survival. Human beings are not mean ...

(1 pages) 55 0 3.0 Dec/2002

Subjects: Humanities Essays > Philosophy

This is a rough draft of a full report on insects including motion, respiration, excretion, feeding, internal transportation, parental care, reproduction, and interesting facts.

Movement - Having 6 legs, insects move on alternating sets of tripods. The three black legs are those that are touching the gr ... e water repellent. Others use fin shaped wings or legs to propel themselves through the water.Other insects have acquired the ability of flight. Some use the primitive way of directly attaching the fl ... indirectly attaching their flying muscles to the bone.Except for a few primitive insect groups, all insects are winged or are secondarily wingless (wings lost from groups whose ancestors were winged). ...

(4 pages) 49 0 3.5 Dec/2002

Subjects: Science Essays > Biology

Messing with Nature - Is our food supply safe? Essay response To a article I read in my Biology class: The Teacher wanted our opinion on genetically modified food.

added to plants, which produces a bacterial protein that kills certain insect pests. What if these insects become resistance to Bt modified crops, will we be unwitting unleashing a slew of super-inse ...

(2 pages) 135 1 3.5 Jan/2003

Subjects: Science Essays > Environmental Science


to Taiga in summer time, because Taiga is very cold biome, but when summer come, ice melts and many insects breed inside the melting water. Birds like eat insects, therefore birds come to taiga to nes ...

(3 pages) 49 0 4.8 Jan/2003

Subjects: Science Essays > Earth Sciences

Racism in Society, an essay on "Obasan" written by Joy Kogawa.

's family. In Obasan, there are many instances where the Joy Kogawa uses images of animals, such as insects, kittens and especially chickens to support a general theme of dehumanization. Also these an ...

(5 pages) 152 1 3.8 Feb/2003

Subjects: Literature Research Papers > North American > Authors

Paleontologists: This is a report on the career and on carnivores and herbivores.

o they dig up bones, but they also collect teeth,claws, skin, hair, fish scales, eggshells, tracks, insects, leaves, dinosaur nests, and evenmicroscopic pollen. They also don't just find and collect d ...

(3 pages) 51 0 4.8 Mar/2003

Subjects: Science Essays > Biology

Is air travel safe?

histicated instrumentation. One cause in the case of jets can be large flocks of birds or swarms of insects being sucked into the jet nacelles and thereby stopping the engine. This may happen at low a ...

(3 pages) 92 0 3.9 Mar/2003

Subjects: Science Essays > Engineering

Carnivorous Plants. Individual descriptions of the main species of Carnivorous Plants and how they feed.

nutrients. This is why these plants have adapted to supplement their diet by catching and digesting insects and other living creatures.There are two types of traps produced by carnivorous plants. T ... The Cobra Lily catches its prey in the same way as most Sarracenia, this being the pitfall method. Insects are lured to the cobra lily by the sweet-tasting nectar at the opening of the trap. When the ...

(5 pages) 66 1 4.3 Mar/2003

Subjects: Science Essays > Biology > Plant Biology


without a backbone and with a body divided into three main parts: the head, thorax and abdomen.Most insects have three pairs of legs and one or two pairs of wings. The 'feelers' or antennae on the ins ... airs of wings. The 'feelers' or antennae on the insect's head are it sense of touch and smell. Some insects have a sting in the abdomen.We already know that this planet. As they fly from flower to flo ...

(1 pages) 40 0 3.0 Apr/2003

Subjects: Science Essays > Biology

Weed Control and Prevention.

y would be to use store-bought herbicides, which can be harmful to people and pets, as well as many insects beneficial to a healthy lawn. Another alternative to weed control is hand-pulling them out, ...

(3 pages) 41 0 5.0 Apr/2003

Subjects: Science Essays > Environmental Science