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How does climate change affect the life span of animals
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Claim: Of all three water temperatures, the cool temperature of water resulted in the highest fish respiration rate.
Evidence: The same fish was in a beaker inside a bowl. The impact of the temperatures was controlled by the use of a thermometer. One by one the different temperatures were placed in the bowl surrounding the beaker. The following data was collected:
Reasoning: Using internet search to explain the impacts of water temperature on fish respiration, I learned that temperature affects the amount of gas that is able to be dissolved in a given amount of water. Moreover, it means that the amount of dissolved oxygen available to organisms is directly related to water temperature. As temperature increases, the amount of oxygen the can
The Artemia franciscana can survive in extreme conditions of salinity, water depth, and temperature (Biology 108 laboratory manual, 2010), but do A. franciscana prefer these conditions or do they simply cope with their surroundings? This experiment explored the extent of the A. franciscanas preference towards three major stimuli: light, temperature, and acidity. A. franciscana are able to endure extreme temperature ranges from 6 ̊ C to 40 ̊ C, however since their optimal temperature for breeding is about room temperature it can be inferred that the A. franciscana will prefer this over other temperatures (Al Dhaheri and Drew, 2003). This is much the same in regards to acidity as Artemia franciscana, in general thrive in saline lakes, can survive pH ranges between 7 and 10 with 8 being ideal for cysts(eggs) to hatch (Al Dhaheri and Drew, 2003). Based on this fact alone the tested A. franciscana should show preference to higher pH levels. In nature A. franciscana feed by scraping food, such as algae, of rocks and can be classified as a bottom feeder; with this said, A. franciscana are usually located in shallow waters. In respect to the preference of light intensity, A. franciscana can be hypothesized to respond to light erratically (Fox, 2001; Al Dhaheri and Drew, 2003). Using these predictions, and the results of the experimentation on the A. franciscana and stimuli, we will be able to determine their preference towards light, temperature, and pH.
First, 100 mL of regular deionized water was measured using a 100 mL graduated cylinder. This water was then poured into the styrofoam cup that will be used to gather the hot water later. The water level was then marked using a pen on the inside of the cup. The water was then dumped out, and the cup was dried. Next, 100 mL of regular deionized water was measured using a 100 mL graduated cylinder, and the fish tank thermometer was placed in the water. Once the temperature was stabilizing in the graduated cylinder, the marked styrofoam cup was filled to the mark with hot water. Quickly, the temperature of the regular water was recorded immediately before it was poured into the styrofoam cup. The regular/hot water was mixed for a couple seconds, and the fish tank thermometer was then submerged into the water. After approximately 30 seconds, the temperature of the mixture leveled out, and was recorded. This was repeated three
For this experiment, it is important to be familiar with the diving reflex. The diving reflex is found in all mammals and is mainly focused with the preservation of oxygen. The diving reflex refers to an animal surviving underwater without oxygen. They survive longer underwater than on dry land. In order for animals to remain under water for a longer period of time, they use their stored oxygen, decrease oxygen consumption, use anaerobic metabolism, as well as aquatic respiration (Usenko 2017). As stated by Michael Panneton, the size of oxygen stores in animals will also limit aerobic dive capacity (Panneton 2013). The temperature of the water also plays a role. The colder the water is, the larger the diving reflex of oxygen.
To begin the lab, the variable treatment was prepared as the Loggerlite probe, used to later measure oxygen consumption, warmed up for approximately 10 minutes. To prepare the variable treatment, 200ml of Sodium and Ammo-lock water was measured in a container and a pre-prepared “tea bag” of tobacco was steeped in the room temperature treated water until a light yellow color was visible. After preparing the tobacco solution the preparation for the live goldfish began as two beakers were filled with 100 ml of treated water. Each beaker was weighed before addi...
The procedures for this experiment are those that are referred to in Duncan and Townsend, 1996 p9-7. In our experiment however, each student group chose a temperature of either 5 C, 10 C, 15 C, or 20 C. Each group selected a crayfish, and placed it in an erlenmeyer flask filled with distilled water. The flask’s O2 levels had already been measured. the flask was then placed in a water bath of the selected temperature for thirty minutes, and then the O2 levels were measured again.
...zebra mussel’s optimal temperature can effect their reproductive cycle. When the temperature of the water reaches about 13°C, the zebra mussels being their reproduction in Lake Erie. The eggs get fertilized when both the eggs and the sperm are released into the water, which then, develop into free-floating larvae called veligers. The larvae are carried by water currents, which allows them to expand their distribution. For about 10-15 days, the larvae are in the planktonic stage. After this stage, the veligers seek for a place of attachment and attach by using elastic fibers known as byssal threads. The point where mussels start to form their shells is known as the settling phase. If the temperature of the water is heated beyond their optimal temperature, then the zebra mussels will be under anaerobic conditions and will be halted from their process of reproduction.
Guillermo Aragon English 121 Leslie McCutchen October 09, 2015 In the Deep End Since the beginning of filmmaking producers have made documentaries to present an argument, an idea, or to portray a kind of reality. In an attempt to introduce an argument of some kind, the filmmaker’s intent is to engage the audiences and to also appeal to their values and emotions. To do this, producers use a number of rhetorical deceives, such as logo, ethos, and pathos, to help get their audience to believe and think in a certain way. Gabriela Cowperthwaite, director of the 2013 documentary Blackfish, uses these rhetorical techniques throughout the film, which tells the story about Tilikum, an orca whale that killed three professional trainers while in captivity.
During the summers the oxygen content atop the water normally has a salinity level consistent with “more than 8 milligrams per liter”; but when oxygen content drops down to “less than 2 milligrams per liter” the water is then known to be in hypoxic state (CENR, 2000; USGS, 2006). Hypoxia is the result of oxygen levels decreasing to the point where aquatic organisms can no longer survive in the water column. Organisms such as fish, shrimps, and crabs are capable to evacuate the area but the fauna that cannot move either become stress and/or die. Due to this, many call the hypoxia zone the “dead zone” (Overview, 2008; USGS, 2006).
Osmoregulation is an example of an organism maintaining homeostasis. More specifically, osmoregulation involves an animal regulating osmotic pressure, or its fluid content. Brine shrimp, Artemia, use osmoregulation to regulate the saline levels of fluid within their body. Because brine shrimps live in seawater, an environment with a high saline concentration, they must actively excrete excess salt. Brine Shrimps use metepipodites as the location of the ion pump which secretes sodium. This is an active transport of ions because it is moving against the gradient, a higher salt content outside the body. The two following studies describe the environmental conditions ideal for brine shrimp and the possible genetic explanation for the osmoregulation of brine shrimp, respectively.
We compared the untreated Daphnias’ data with the data of Carolina Biological Company. It was observed that the temperature plays a major role in increasing the heartbeat of the Daphnia, for example, at 10 degree Celsius it had the lowest heart rate
Methodology: A plastic cup was filled half way with crushed ice and mixed with four spoonfuls of 5 mL of sodium chloride. A thermometer was quickly placed inside the cup to take the temperature and the
Specifically, what would an isopod choose when given the option of a neutral PH, an acidic PH, or a basic PH. The reasoning for this experiment sets out to gather supporting evidence as to which environment an isopod would favor when given an immediate choice. What was tested was whether terrestrial isopods would show a preference when given the choice between the following variables; RO water and RO water (the negative control), an acidic solution and RO water (the positive control), an acidic solution against a basic solution, and a basic solution or RO water. The experiment looked to test if terrestrial isopods would prefer the acidic solution. A prediction based on the way the experiment was designed is that the isopods will likely choose the acidic solution over the basic solution and the RO
A poem without any complications can force an author to say more with much less. Although that may sound quite cliché, it rings true when one examines “The Fish” by Elizabeth Bishop. Elizabeth’s Bishop’s poem is on an exceedingly straightforward topic about the act of catching a fish. However, her ability to utilize thematic elements such as figurative language, imagery and tone allows for “The Fish” to be about something greater. These three elements weave themselves together to create a work of art that goes beyond its simple subject.
Our task was to investigate what the optimum ratio of solute to solvent that will produce the maximum cooling/heating effect?
I'm swimming about and see eight other fish swim around me. The thermometer reads 72 degree Fahrenheit, but the cold water suits me just fine. There are white, black, and gray pebbles all over the bottom of the tank which collects the deserted food particles. I accidentally suck up a small pebble with the fish food I tried eating from the bottom of the tank.