Gain Immediate access to our Essays
FREE access exchanged for your work, or pay £4.99
Your Status: Logged out
Student Central helps you learn fast, by providing unlimited access to 118,514 essays and coursework documents written by GCSE & A Level students.
Register for FREE now by publishing your essays, or pay as little as £4.99 per month.
Essays in Living Things in their Environment category
-
Investigating the habitat of woodlice.
... moisture. Most woodlice feed upon dead or rotting vegetation, or the microbial flora which live on such materials. Because of this, they can be found under decomposing wood. Woodlice are negatively phototaxis which means they are reluctant to be in light. ...
-
Investigation - Examination of bacterial sensitivity on antibiotics.
... alcohol in a beaker and place them in this alcohol. (v) Remove your glass spreader after some few minutes from the alcohol and pass it through a flame from the Bunsen burner. (vi) Use the sterilised glass spreader to spread the inoculated ...
-
Investigation into Flat Periwinkles on a Sheltered Shore.
... and lichens. My method of collected data involved performing a vertical interval interrupted belt transect up the shore, starting at the Extreme Low Water Springs which was 1.2m and ending at 8m. The results I gained are displayed on the kite ...
-
Investigation into Temperature Regulation in Animals
... The normal temperature for humans is just under 37°C (for the inside of the body i.e. organs), and the body is constantly kept at this temperature, unless we are ill (skin temperature may vary). Inner temperature is kept constant at ...
-
Investigation of Animal Behaviour
... the container. Six worms of varying lengths and thickness were then placed in the centre of the box. They were all collected from a 1m of the garden and placed in a jar. The start time was recorded and after 15 minute ...
-
Investigation of Ecology on Four Sites on the River Nar
... There is no flow rate and no tidal influence. There is a huge population of surface algae, which prevents the penetration of light and the absorption of oxygen. Therefore there is less oxygen in the river and this will affect ...
-
Investigation of the effectiveness of sunscreen factors in preventing the damage of growth of V.nat in UV. Light
... bacteria are exposed to UV light they are destroyed. The time in which the bacteria are exposed to a stream of UV light can be altered, for longer and shorter time elapses. Whilst the bacteria are exposed for a longer ...
-
Is chlorhexidine more effective than tea tree oil
... the effectiveness of Chlorhexidine and Tea tree oil on both E-coli and B. Subtilis. Though the calculated means of diameter of the inhibition zone is greater with Chlorhexidine, it is not a definite indicator that verifies that Chlorhexidine is a more ...
-
Is the preferred habitat of moss on the North side of a Yew Tree or the North side of an Oak Tree?
... take. The procedures selected and anticipated methods of collecting data. I will need to control various techniques and methods of working in order to standardise my investigation. I will standardise the actual sample taking. I will place the meter ruler ...
-
Isolation of a urea degrading bacteria.
... luteus has this ability as an evolutionary hangover from its life in its ancestral soil habitat. In this environment urea is readily available and the ability to degrade it is a distinct advantage. As the species evolved to live on ...
-
Life In the Freezer
... station structures. Average wind speed is around 12 knots, although many summer days are calm. The average annual temperature at the South Pole is - 50 degrees Celsius and generally ranges between 21 degrees Celsius in the summer and -78 ...
-
lion adaptations
... mane varies from blond to black. Lionesses are powerful animals who usually hunt in groups and stalk their chosen prey. They can reach speeds of 59 km/h (40 mph), although, only for short bursts,so they have to be close to their ...
-
Liquid culture (E.coli in this case) is diluted to reduce the number of organisms per unit volume. This is necessary when numbers are being counted, and counting too may organisms may be inaccurate. Serial dilutions are made
... provides an initial dilution of 10-1 dilution. * Using a sterilised pipette, transfer 1cm of the dilution and place it in the second test-tube, mix the solution well. This gives the 10-2 dilution. * Using a sterilised pipette again, remove 1cm of ...
-
Literature Review on Germination of Orchid Seeds.
... agents pollinate the rest. Many orchid flowers are adapted for pollination by a single species of insect. Orchids do not vary as much vegetatively as they do in floral structure, but a great variety of forms exists, reflecting the wide range ...
-
Managing Grassland and maintaining diversity
... aided with fertilises to maximise the crop yield. Mowing for silage usually begins in late April and the followed by two more cuts every six weeks. More diversity in the crop is produced when cutting for hay is done usually ...
-
Maori Development - Past and future.
... of Archeology fro Asian and the Pacific, or Human Ecology: An interdisciplinary Journal. In addition, I gathered various information's from scholarly books which dealt mostly about culture and identify or the archaeology of the Maori. "Catches indicated that fishing was ...
-
Measurement of the vitamin C content of fruit juices
... poor healing of wounds. Vitamin C cannot be stored in the body, so there needs to be a daily intake of vitamin C. Vitamins are group of organic substances quite unrelated to each other in their chemical structure. The features ...
-
Method of extracting copper and gold by bacterial leaching.
... solution by the "ligand exchange solvent extraction? " method. During this a good ligand (a molecule containing one or more unshared pairs of electrons? ) is dissolved in an organic solvent, such as kerosene, which is immiscible with water. This ...
-
Micro-organisms,most effective antibiotic to act against the two types of bacterium: E.coli and B.subtilis.
... used correctly and safely. Pull lever down when Bunsen burner is not in use,-this reduces the intensity of the flame so contact of flame with objects is less likely, wear safety glasses and lab coat. Break fire alarm, seek medical attention, and ...
-
Mining for Gold and Copper using Biohydrometallurgy.
... bacterium may also need bacterial nutrients containing nitrogen and phosphorus. The result is that the bacteria transfer the insoluble sulphide minerals into a solution of Cu2+, Fe2+, Fe3+ and SO42 - ions. The process would be carried on impermeable base layer ...
-
Mining with Microbes.
... solution: 4CuFeS2 + 17O2 + 4H+ › 4Cu2+ + 4Fe3+ + 8SO42- + 2H2O The solution is then drained off and the Cu2+ ions are removed from the solution using a different solvent (ligand) like kerosene. The 197 Ligand takes up Cu2+ ions ...
-
Monitoring an Organism
... then it means we know more about the captured primate in the zoo. If we monitor the primates every am and pm till the whole year then we would certainly find out the condition and environment they want to live ...
-
Mountain Pygmy Possum
... very distinctive saw-edged, premolar teeth. - In the 1960s more fossils, of this apparently extinct species, were found in Buchan caves in eastern Victoria. Despite the interesting nature of these finds all of this information remained in the minds of ...
-
My investigation took place in a small woodland close to the Heatree Activity Centre which is located on the edge of Dartmoor National Park in Devon.
... and the protection of the lichen. The algal cells, through the process of photosynthesis provide the lichen with its organic nutrition. Lichens are photoautotrophs, so they obtain their organic nutrients using energy from sunlight. 1. The Cortex 2. The Algae Layer 3. The Pith 4. ...
-
Natural Defence Barriers.
... In the nasal passage the nasal hairs filter the air that is drawn in through breathing. Further on in the breathing process tiny little hairs called cilia beat in a wave like motion to sweep particles away from the lungs. ...