A microcosm is basically a smaller scale version of a greater population, or a miniature. At the beginning of this semester, we began the construction of our own “miniature worlds” within the confinements of a small zip lock bag. We observed the changes and growth of life inside these bags over the span of a few weeks. The reason for setting up these projects for weeks at a time, was to get a better range of how things change and grow over time, sort of like a smaller scale of how it would really be if grown outside the bag.
MATERIALS AND METHODS: The materials that were used in this microcosm project consisted of soil, a handful if pro-mix potting soil, a variety of seeds and seedlings, a small square of leather, worms, H2O and CO2.
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The leather was added in order to begin the growth of moss in our microcosm. Once all of this was set up, we needed to add the living organisms, the worms. Being the first day, we only added 2 worms, one earthworm and 1 red worm. As soon as the set up was finished, we moved our microcosms to the back, to which they were kept at a standard temperature of 70.5°F, and at a humidity of 53%. It received natural lighting as well as light from 25watt incandescent light bulbs.
Week 1: By the second week, there wasn’t much preparation left, simply added 2 more worms, and added a bit more water.
Week 2: This was the last time more worms were added to the experiment, totaling a good 6 worms, 3 of each red worm, and 3 earthworms. Added H2O.
Week 3: No new forms of life were added, but the abiotic factors did end up changing, which would result in the microcosm changes being a bit different. The temperature was now changed to about 69 ° F, and the humidity went from 53% to 54.5%. The other factors such as light, remained constant. Added a bit of H2O in order to keep the microcosm moist for the worms to thrive and plants to grow.
RESULTS:
Week 1: After simply one week, there was tremendous amount of growth in the microcosm. It was already full of small plant life. There were plenty of small sprouts from all the big seeds and small seedlings. For the garden bean, it grew to become approximately 150mm tall. The little peas
The dependent variable is pulsation rates of L. variegatus before and after they were in the treatments. The standardized variable of this experiment would be the temperature of the surroundings of the L. variegatus, the three pulsation rates taken for each worm before and after the treatments, and also the amount of time each worm was kept in their respective treatments. The level of treatment for this experiment would be ten because of the six different concentration treatments of caffeine and nicotine along with the four household drugs. The sample size of the experiment differed from some treatments to other. For the three different concentrations of caffeine and nicotine, the sample size was 18 black worms each. The sample size of the control treatment of week 1 was 6 black worms. 12 black worms were used for the control of week 2, decaffeinated coffee and instant coffee. 11 black worms were used for the tea treatment and 15 were used for the tobacco treatment. There were three replications of the pulsation rate readings per worm before and after the treatment. With all this information we were able to get the results we got.
Four cups of equal size were filled with one cup of garden soil. Lima beans were planted at an equal depth (one inch as instructed on the bag). Every day, for 33 days, each plant received one half tablespoon of the specified liquid. Beans one and two got one half tablespoon of water each,
Test tube four contained a snail and was placed in the dark. It was hypothesized that the water would remain yellow after a day.
2. Pin the earthworm to the tray using one pin on either end of the worm.
2. Place 10 randomly selected sowbugs in each of the 3 empty tin bowls for 3 minutes to allow them to acclimate to the environment.
The containers were plastic and 18 by 15 by 6 centimeters long. Prior to the experiment being performed, the crickets had spent a week in these residencies. Along with the crickets in the plastic containers, there was wet pieces of paper towel and a slice of carrot.
Then we got multiplied the 10 sec H.R by 6 to get a total of one minute and recorded our data. Finally we put the Daphnia magna into its retired container, cleaned our depression slide, turned our microscope off and back into the cabinet, and cleaned up our area with
Investigation: How does the number of maggots in the mass affect the temperature of maggot mass and development of maggots in the mass?
As a group, we did an experiment of billbug and what kind of water they enjoy to stay. Our team was used for experiment sugar water, salt water and plain water. We measured the material we wanted to use. We used salt for 2.0 g. We used sugar for 2.0 g. and we used plain water for 10 ml. We mixed 10 ml of plain water into 2.0 g of sugar and 10ml plain water into 2.0 g of salt. We placed one tissue for each chamber. We dropped in chamber one the salt water. We dropped chamber two the sugar water. We dropped chamber three the plain water. In the middle of the chambers we placed filter paper. Then we put 5 billbugs and let them free to move anywhere they wanted. After 5 minutes we recorded how many billbugs are on each side of the chamber. We
Observe the worms at 0, 4, 8, and 12 minutes, recording their level of
METHODS/PROCEDURES: In the beginning of the experiment, pea seeds were used in order to perform the experiment. It was extremely important to acquire good, dry, and viable seeds so the process of germination could occur. A handful of these healthy seeds worked best in assisting the experiment. The seeds ability to germinate was a vital information needed to determine the outcome of the experiment.
Hypothesis: If the tobacco hawk worms are released into a five chamber, choice chamber, then they will be more attracted to the strong smelling coffee because they are found on strong smelling
Next you record some observations and of your cupcake (microbead mat) and we then get to lesson 4. In extreme yellowstone expedition lesson 4, we start out by trying to grow some bacteria. After a few days you collect bacteria and let it grow after 2 days it will have a little bit of bacteria colonies. When we were waiting for our bacteria to grow we made a microbial mat in the microbial mat we have calcium sulfite kimwipe tissue as a carbon source nex,t some sand, pond mystery mix, water, and some cyanobacteria. That was all we did in lesson
The researchers could not let this happen. Many tests were yet to be completed and thousands of dollars of experiments would be lost. In a rush to fix the problem they attempted to pull away each worm from the other. After several long hours of tugging at them they were all ripped away from each
Scoops of flour are taken out from the Tribolium casteneum (T. casteneum) and Tribolium confusum (T. confusum) stock containers, and poured onto two pieces of paper separately. Four vials are labeled as 10 T. casteneum, 10 T. confusum, 20 T. casteneum, and 20 T. confusum. The bettles are brushed into the vials according to the number of bettles labeled, and the vitals are sealed with a foam stopper. After that, the start date, initial number and type of beetles are recorded. Each week, the flour from each vial will be poured into a shifter and separated into a petri. The beetles will remain in the sifter. The beetles and larvae will be observed and the numbers of live and dead beetles will be recorded. The live beetles and larvae will then