You are welcome to search the collection of free essays and research papers. Thousands of coursework topics are available. Buy unique, original custom papers from our essay writing service.

41 results found, view free essays on page:

  • Seed Plants Gymnosperms And Angiosperms
    3,045 words
    Diversity of Plants Plants evolved more than 430 million years ago from multicellular green algae. By 300 million 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 of plants are the bryophytes and the vascular plants; the latter group consists of nine divisions that have living members. Bryophytes and ferns require free water so that sperm can swim b...
  • Municipal Water Pollution
    739 words
    Water Pollution People keep on throwing trash and industrial wastes into our clean water. If this continues, the quality of our water will deteriorate, and without it everything dies, including us. Water pollution is destroying our world, but fortunately we can count on special treatments for this kind of problem. What is water pollution "It is the contamination of water by foreign matter such as organisms, chemicals, and industrial or other wastes" (Encarta 96). Water has six major pollutants. ...
  • Frank J Horgan Filtration Plant
    1,228 words
    Frank J. Horgan Filtration Plant Introduction The Frank J. Horgan Filtration Plant is located Southeast of Toronto on the shores of Lake Ontario (See map). Its purpose is to provide safe drinking water to our taps by filtering the water. The water is gathered from Lake Ontario. This plant has a production capacity of 455 million litres per day to supply the residents of Toronto with drinking water. Its average production of drinking water is 355 million litres per day. It is also the newest filt...
  • Their Food And Water From Green Plants
    3,284 words
    Life science 7th grade Jr high Chapter 1 Plants are the basis of the food pyramid for all living things, even other plants. They have always been very important to people, not only for food, but also for clothing, weapons, tools, dyes, medicines, shelter and a great many other purposes. Both humans and animals benefit from plants. We eat many different types of plants such as fruits and vegetables. We also use plants for our herbs. Plants are also used to manufacture many different products such...
  • Dead Plants And Animals In The Water
    399 words
    Lab #4 Oakland Ravine and Lake: Water Quality 1. The pH levels are fairly constant for inlet and outlet. The dissolved oxygen (dO), on the other hand, varies very much between the inlet and the outlet. The measurements of the pH and the dO of the water do not differ greatly. By comparing the two graphs given I can see that both the pH and the dissolved oxygen are lover in the winter. I think this is related to the amount of sunlight that the water receives and also the temperature of the water. ...
  • Water Vapor Around The Plant
    1,199 words
    Water is essential to plants in many ways. It first provides the major substance for living, to keep cells from shriveling up and dying. The second major function is to keep the plants rigidity. As plant cells become turgid, full of water, the cells expand, filling the extent of their cell walls, which are kept taught with turgor pressure. If the cells lose water, two problems occur. First, the cells dehydrate, causing the organism to die. Second, turgor pressure is lost as cells become flaccid,...
  • Growing Season The Plant
    1,151 words
    To many people's surprise, the Venus flytrap is not native to some tropical, exotic country or steamy rainforest. The Venus flytrap is native only to the coast of North and South Carolina, in a radius roughly 100 miles around Wilmington. It is a small rosette plant, generally six to eight inches in diameter. The leaves consist of leaf stems, or petrels, that may be heart-shaped and flat on the ground, or thin and upright. The trap is the actual true leaf, and sits at the end of the petrel. The t...
  • 10 Mad Of R 1 Water
    2,235 words
    There are many technological solutions that could potentially help to alleviate the current water shortage on Oahu. For the purpose of this paper, our group has chosen to discuss what we believe to be the top three most feasible technological solutions. In order of current usability they are; 1. Water recycling 2. Desalination 3. OTEC (Ocean Thermal Energy Conversion) Water Recycling Water recycling here on Oahu is an important part of ensuring a sustainable water supply for future generations. ...
  • Algae And Plant Growth In Natural Waters
    872 words
    Phosphates are present in many natural waters, such as lakes and streams. Phosphates are essential to aquatic plant growth, but too much phosphate can lead to the growth of algae and results in an algae bloom. Too much algae can cause a decrease in the amount in dissolved oxygen in the water. Oxygen in water is affected in many different ways by phosphates Phosphorus is usually present in natural waters as phosphate (Mc welsh and Raintree, 1998). Phosphates are present in fertilizers and laundry...
  • 2 Planting Pots Planting Soil 4 Bean
    331 words
    What effect does crowding have on bean plants? My prediction was that crowding would have no effect on them. I predicted it this way because plants are made to grow in tough conditions and I did ent think crowding would have any effect. Materials needed to experiment. 2 Planting pots Planting soil 4 Bean seedsWaterRulerSupport stick Notebook Procedure: Take your planting pot fill with planting soil a little above half way. Take your seeds but before you plant them weigh them for data. Once you h...
  • Coleus Plants
    1,822 words
    Bill Mrs. Steen / Mrs. DetertBiology / English 1012/10/01 Coleus and Terrariums Coleus is a very beautiful plant that consists of over 150 different species. It is best known for its colorful foliage. Coleus can grow well in any soil above 55 degrees Fahrenheit. The pretty plant can grow in terrariums. Terrariums are "gardens under glass" which means that they are jars or glass boxes that can be filled with soil and other things that plants need to grow. They don't have to be watered so once the...
  • Atmosphere Without Oxygen Early Life
    1,074 words
    Plants are critical to other life on this planet because they form the basis of all food webs. Most plants are autotrophic, creating their own food using water, carbon dioxide, and light through a process called photosynthesis. Some of the earliest fossils found have been aged at 3.8 billion years. These fossil deposits show evidence of photosynthesis, so plants, or the plant-like ancestors of plants, have lived on this planet longer that most other groups of organisms. At one time, anything tha...
  • Terrestrial Plants
    989 words
    The kingdom Plantae encompasses water-dwelling red and green algae as well as terrestrial plants, which have evolved to support themselves outside of the aquatic environment of their ancestors. This Spark Note focuses on the terrestrial plants, which include bryophytes (mosses) as well as the more highly evolved vascular plants, called tracheophytes. As a consequence of their move onto land, terrestrial plants require structures that support their weight, prevent desiccation (drying out), aid in...
  • Water System
    464 words
    The Three Mile Island Disaster - An Organizational Communication Study The accident at the Three Mile Island Unit 2 nuclear power plant near Middleton, Pennsylvania, on March 28, 1979, was the most serious in U.S. commercial nuclear power plant operating history. Even though it led to no deaths or injuries to plant workers or members of the near by community, it did bring about sweeping changes involving emergency response planning, reactor operator training, human factors engineering, radiation...
  • 5 Reclaiming Waste Water In Florida Uses
    2,699 words
    Recommendation For Recycling Water in Florida Prepared for: Tom Petty, Chairman Of The Board Department Of Environmental Regulation Board by: Environmental Specialist, Pasco County Florida November 29, 1996 Contents Abstract... 2 Executive Summary... 3 Introduction... 4 Methods... 4 Results... 5 Basic background information on water reuse in Florid... 5 Reclaiming Waste Water in Florida Uses for reclaimed or reused water... 7 Conclusions... 7 Recommendations... 7 References... 7 Abstract " Recom...
  • Sunlight Vs 12 Days With Plants
    816 words
    How Sun Light Effects Growth of Morning Glories Description of Morning Glory's (background) The Morning Glory (Ipomea purpurea) family is Convolvulaceae, it contains 1200 species of herbaceous plants. Morning Glories are an outdoor plant. They received their name by their growth. They bloom for only one single average morning. I chose the Heavenly Blue species. They were discovered in the 1920's by a home gardener. They are 4-5 across with creamy white throats contrasting with a heart shaped shy...
  • Cells Water
    861 words
    Water has importance inside cells and externally. This may be because it has interesting chemical and physical properties; it can be found naturally in all three of its states. However its molecules are bonded together by hydrogen bonds, this raises its melting and boiling points, i.e. its boiling point would be -120 C rather than 100 C. Also because it contains slightly negatively charged oxygen atoms and slightly positively charged hydrogen atoms making it polar. Water has been called a univer...
  • Water With Other Plants
    2,662 words
    Growth of bean plants Control variables: Distilled water, vinegar, sugar water Experimental variables: water Title: Chemical and water affect ance on bean plants Purpose: Do different chemicals such as distilled water, sugar and vinegar affect the growth of bean plants. Materials and apparatus: Materials Water Distilled water Sugar Vinegar Seeds (bean, color white) Natural sunlight Regular oxygen Regular CO 2 Space Competition (other plants) Nutrients Temperature 12 plastic cups Soil Experimenta...
  • One Worm Looks
    319 words
    Day One: Made a tranquarium, put in rocks, sand, dirt, fertilizer, mulch, moss, grass, a small tree sapling, and another small plant, 5 rollie-pollies, 1 flying grasshopper, 1 normal grasshopper, 5 earth worms, 2 fire flies. Around noon it had water droplets at the top of the bottle. Around 6 the water droplets had fallen back down to the bottom of the bottle. Day Two: Plants and animals still alive, one worm looks like it died (but was injured when it was put in), the rollie pollies were more a...
  • Wasting Of Clean Water
    851 words
    Alternatives To The Clean Water Dilemma Essay, Alternatives To The Clean Water Dilemma Alternatives to the Clean Water Dilemma Because of our increasing populations around the world, more and more of our clean drinking water is being used and contaminated. The world needs to take action immediately. Implementing one plan will not save our drinking water, but instead several different things need to come in to effect to preserve the world's clean drinking water. One alternative we have is to make...

41 results found, view free essays on page: