Variables Held Constant: The length of time the bags were observed, number of trials done for each concentration and temperature and the amount of heat and light the plants were exposed to.
Households can recycle and reduce their amount of waste by taking certain biodegradable materials and start a compost bin. It is here that the common wastes such as food scraps, coffee grounds or anything that has a high organic matter can be put together and let nature take its course. “Using composts in agriculture to minimize organic wastes and to reduce the addition of fertilizers and fungicides in crop production is highly effective”. (Stan, Virsta, Dusa, Glavan, 2009 pg 1) So the compost that is produced can be used to help fertilize the ground in which crops even flowers are grown cutting down on pesticides and fertilizers. The organic component, in materials, can be used in compost recycling to help to promote a healthy soil. By having a healthier soil this provides a healthier plant. This
Many things that all biodegradable and up in landfills the things that take years to decompose. Such as plastic, glass, metals! etc. This problem can be solved by me, with help, using $1000. When people throw away certain things, they don't know that many of those items are organic matter that can be decomposed. When you gather these organic and biodegradable items into a band, they decompose. This is called composting. The mixture inside the bin is called compost.this compost can be used as fertilizer and can help condition land. Things like fresh grass clippings, flowers, vegetable and fruit feelings such as potatoes and orange peelings, vegetable crop residue such as potatoes and tomato plants, herbivore manure, such as horse, cow, and rabbit,
Introduction: Chemical reactions are dependent upon two factors: temperature and concentrations of substance. We can monitor the rate at which a chemical decomposes or the rate at which a chemical substance appears. In this experiment we will be measuring the rate of decomposition of hydrogen dioxide with the following reaction:
An enzyme also known as a protein, is a biological catalyst which speeds up chemical reactions by lowering the activation energy to increase the rate in which the reaction occurs. The enzyme used was amylase, which breaks down starch molecules into maltose. PH, substrate concentration, salt concentration, and temperature. When enzymes reach a low temperature, the activity is slowed down of molecule movement, but the enzyme is not destroyed. Once enzymes are placed in optimal temperatures once again, it will restore its activity to a normal rate. When enzymes reach too high above optimal temperature, the enzyme is denatured and cannot be restored. In the experiment performed the activity of breaking down starch in fungal and bacterial amylase was being tested at a range of temperatures and time. The fungal and bacterial amylase work best at optimal temperature. Amylase will function best at sixty degrees Celsius at 10 minutes when starch had been one hundred percent hydrolyzed. Hydrolyzed is the breakdown of molecules through addition of water. The experiments independent variables were the time, temperature and enzyme used. The dependent variable was the enzyme activity that broke down the starch into maltose. The controlled variables were the temperature baths, the iodine drop amount, the mixture drop amount, and location of experiment. The control group was the zero minutes without amylase at
To began, composting would not only reduce the amount of food in landfills, it would also reduce methane gas. Methane in landfills is produced because of lack of oxygen that reaches the decomposing waste. But when composting is done correctly, methane production is much smaller. In order to correctly compost, food scraps must be turned on a semi-regular basis as well as be lightly watered and the food waste (an organic material) must be mixed with a carbon-based material (paper or wood chips) in order for it to
This experiment is called Elephant’s toothpaste. Which is a decomposition reaction where hydrogen peroxide (H2O2) is decomposed with the aid of a catalyst (either Sodium iodide or Potassium iodide). By placing a small amount of detergent in the mixture the amount of oxygen produced can be determined by the volume of foam produced in 2 minutes. By performing the experiment at different temperatures its tests the effect varying the reaction temperature will have on the reaction rate. My hypothesis was If the temperature of the reaction rate is increased than the oxygen production will
Daphnia Magna will be used to measure how quickly dead zones are forming by eutrophication. We will use three different endpoints to measure the Daphnia Magna: Heartbeat, Mobility, and Mortality. We will have three fertilizers mixed with pond water in three separate test tubes per fertilizer with Daphnia Magna and one without ferilizer as the control. There will be three different sets each set will contain four test tubes: Three test tubes each with different fertilizers and one without as the control. We will then measure the three endpoints of the Daphnia Magna after thirty minutes which will be repeated for each set thus the whole experiment will last 90 minutes. The equipment needed for the experiment is the following:
As the Gale Encyclopedia says, "Composting is the process of arranging and manipulating organic wastes so that they are gradually broken down, or decomposed by soil microorganisms and animals."(Blashfield, Jean F.). Instead of throwing away kitchen and yard waste individuals and communities should start compost piles and facilities. The compost can be used as fertilizer for plants, and aid in replacement of eroding top soil. Every year approximately 1.3 billion tons of food waste is produced ("Food Waste Facts."). The amount of food waste could easily be reduced. Beside composting, we can encourage people to shop responsibly and keep in mind how much food they really need. While an individual's impact on the total amount of organic waste seems useless and small compared to the total amount thrown away each year, the effects are cumulative. If more and more individuals start composting these materials, the amount of useable waste sent to landfills will slowly
At the end of the experiment, 20 oz of soil was be placed within a 1 gallon container with the ideal amounts of water and nutrient amounts. Five worms will be placed within the container and left at room temperature. The purpose of this final experiment will be determining how long the worms can survive with the ideal
In “Disposal of the Dead”, Kroeber arranges a cross cultural comparison of different cultures, and by doing so Kroeber aims to understand why cultures take on a variety of strategies in the treatment of the deceased. As a result of Kroeber’s research among the aborigines of California and incorporating information from other cultures, Kroeber found that cultures varied within themselves and other surrounding cultures in regards to their burial procedures. Therefore, Kroeber concludes that there is a lack of consistency in the different burial methods among cultures that should process similarities. As a result, Kroeber compares the disposing of the dead among these cultures as economical and material entities like matters of fashion. However,
In this week’s lab experiment, the rate of decomposition of hydrogen peroxide forming oxygen gas will be observed and studied. Since the rate of a chemical reaction is dependent on two things; the concentrations of the reactants and the temperature at which the process is performed, the rate can be measured at which a reactant disappears or at which a product appears. When measuring the rate, the rate law will be applied. The objective of this lab is to demonstrate how the rate changes with varying initial concentrations of hydrogen peroxide by measuring the rate at which oxygen is evolved.
Amy is having difficulty with depression as well. She is unable to move to the last stage of grief, acceptance, until then she will be stuck in the same stage, reliving the same emotions over and over until she is able to cope with the feelings that were aroused
The independent variable of this experiment were the different types of the solutions used, while the dependent variable was the mass of the cucumber slices. The constants were, the amount of liquid used and the time the cucumbers were left in the solution. While the control was the cucumber left in the cup with no solution. The students made a hypothesis saying that they believe that the cucumber slices put into the salt solution would decrease in mass while the cucumber put in the distilled water would increase in mass. In the end, the results of the experiment supported the students