To test my hypothesis, I try to decrease my independent variable, which is the population of starfish. This leads to the dependent variable which would be chiton, mussels, acorn barnacles, and gooseneck barnacles because they are what is affected by the decrease of the starfish population. I am going to start the experiment with 25 starfish in the tidal pool community, and will repeat it 3 times. It is important that each time the simulation must be reset in between each trial. I’ll then measure the population of the acorn barnacles, chiton and mussels at the end of repeating after 7 weeks. Then, I will have stimulated again but this time without starfish in the tidal community. I will also do these 3 times and reset the simulation between
My predictions for 6.1 were almost exactly what I expected except for one area. I thought that I would have saw an increase for the Chthamalus barnacles on day 2 there were 4 and then on day 14 there were 13. The part that did not met my expectations was I did not see a small decrease in the number of both species towards the end. Only on the first the sample on day 12 t day 4 saw a small decease of 1 individual of each species. But for the second trial there was an increase for each of the species of barnacles fro day 12 to 14. The Chthamalus saw a large increase from 18 to 23. The Semibalanus Saw an increase of 3 to 5.
Millions of people come from across the world to visit Seaworld every day without thinking about the lives of the animals behind the scenes. Why would they have concerns? From Seaworld’s commercials to the website, they convince the general public that Seaworld is the place to go to see the happy sea animals perform. If Seaworld is such an ecstatic place, what excuse does Tilikum, their greatest well known orca whale, have for the three attacks on trainers? The documentary “Blackfish” was created by the director Gabriela Cowperthwaite because she questioned herself after realizing Tilikum's odd behavior over time in captivity, and if there was any indisputable parts to animal captivity?
Our dependent variable is the rate of the reaction. In this particular experiment we will be using diluted Hydrogen Peroxide as we will be using a lot. I have decided to do a Preliminary Experiment because it will be a
Understanding other people’s perspective is vital when it comes to making someone a more informed and a more sympathetic person. For example, in politics, there are two main sides; the democrats and the republicans. These two sides almost never see eye to eye, but when they see from the other’s point of view, an agreement can be made.
Daphnia are planktonic crustaceans2, more commonly known as a water flea. They are microscopic and most commonly found in ponds or lakes. These fleas have flat leaf-like legs that help them move through the water2. Male Daphnia are smaller than female but have larger antennules and their first legs have hooks that are used for clasping2. In spring and summer female Daphnia are more commonly found than male1. Female Daphnia can fertilize without male1. A male Daphnia is more common in fall and winter months while they fertilize egg for the spring1. Our objective was about understanding the scientific method, and we used the Daphnia to do this. The goal was to look at the affect caffeine and ethanol would have on a Daphnia’s heart
The dependent variable within the experiment was the relative abundance of the species within the two separate areas per sample. This was measured through obtaining a sample and counting the number of Gammarus pulex present per
Evaluation: If this experiment was to be redone then more diverse oceanic life would have to be used playing different roles in the water. The experiment performed showed a small projection of the ocean’s course if pH levels rise but by adding more confounding variables then maybe the outcome may have been different. If another researcher is to replicate this experiment it is optimal if they did several different trials to see if the same result occurs like the one just performed.
Writing in Biology is different than writing in other courses like English. In Biology, the writer must conduct an experiment prior to writing a lab report on the findings. For this lab report, I had to conduct an experiment comparing the cellular respiration rates of germinating peas and non-germinating peas. Before beginning the experiment, we had to create a thesis that would state which set of peas would have the higher respiration rate, germinated or non-germinated peas. We were expected to make a thesis based on our prior knowledge of how cellular respiration works in plants. I conducted the experiment during class two weeks before the lab report was due. The experiment consisted of placing peas in a Biochamber where the levels of carbon dioxide and oxygen would be measured every 6 seconds for 3 minutes. After completing that, my instructor stressed that we repeat the experiment 5 more times for each set of peas. After collecting the data, we compare...
In this study, Øverås et al. (2014) experiment’s had two independent variables. The first independ...
When one considers examples of “dangerous” species, some consider snakes, spiders, scorpions, bears, sharks, lions, and parasites in that category. Although they can cause humans potential harm, there are certain species that are harmful to the environment. This report will discuss a predator that can cause major destruction to coral reef colonies in the sea. The species that will be discussed, in particular, is called the Crown of Thorns Starfish or CoTS for short.
As an infant leading all the way up to the beginning of adolescent years, SeaWorld had always been a place of refuge for families, to get away and be entertained by the famous orcas or also known as killer whales. Although, it is much more than just an entertainment source, this is an exceeding crisis that was well overdue to be examined into further investigation. Within the 2013 documentary Blackfish, directed by Gabriela Cowperthwaite, tales of the beloved, yet infamous killer whales are told.The story of Blackfish is told by a group of former SeaWorld trainers, a story that leads to the death of trainer Dawn Brancheau who was attacked by an orca named Tilikum. Despite the fact that in the wild, killer whales are viewed
In 1962, at 11:00:09 pm local time on July 8th, the United States detonated a thermonuclear warhead riding atop a Thor missile at 400 km above Johnston Island at a distance of 826 miles from Honolulu, Hawaii. That night was one that many on the Hawaii Islands would never forget (Berkhouse, 1962). Operation , as the test was code named by the U.S. military, caused the first damage in the United States from an electromagnetic pulse created by a nuclear detonation. Though the damage was not intended or planned, the 1.4-megaton weapon caused “the failure of street-lighting systems, tripping of circuit breakers, triggering of burglar alarms, and damage to a telecommunications relay facility.” (EMP Commission, 2004, p. 4)
The tennis ball is the constant variable factor (the variable that is kept the same, to make the investigation valid). The ball will dropped from increasing heights (cm-25, 50, 75,100,125,150,175,200) and the bounce of the ball will be measured. A sample size of 3 results will be taken from each height the ball is dropped. The same investigation will then be repeated, but one of the independent variables will be changed.
Independent variables: The temperature of hcl gas will be decreased and increased throughout the experiment.
Dependent Variable ------------------ Rate at which the bubbles of oxygen rise, which will be calculated by observing how many bubbles of oxygen rise to the surface of a measuring cylinder (by means of downward displacement) in one minute. This will be measured in bubbles per ten seconds. Control variables: ¨ Volume of substrate used: 100ml ¨ Temperature: taken place at room temperature 21 degrees centigrade ¨ Type of substrate used: Hydrogen peroxide ¨ Mass of meat used: 5g ¨ Amount of water in the test tube in which the oxygen bubbles downward displaces in the water. This is so the time taken for each individual bubble to effectively rise to the bottom of the test tube will take the same amount of time.