Construct a hypothesis – Based on your observation in question 1 and your background research in question 2, develop a hypothesis relating to the amount of dissolved oxygen measured in the water sample and the number of fish observed in the body of water? Answer = I would test the dissolved oxygen in different areas of water, keep track of the fish in those areas and compare the results. 4. Test with an experiment – Describe an experiment that would allow you to test your hypothesis from question 3. This description must provide ample detail to show knowledge of experimental design and should list the independent and dependent variables, as well as your control.
Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many living organisms requires oxygen to survive, it is a necessary component of water systems such as streams, lakes and rivers in order to support aquatic life. The dissolved oxygen is measured in units of parts per million (ppm). Examine the data in Table 4 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from; finally, answer the questions below. 1.
Lab 1 - Exercise 1: Data Interpretation Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many living organism requires oxygen to survive, it is a necessary component of water systems such as streams, lakes and rivers in order to support aquatic life. The dissolved oxygen is measured in units of parts per million (ppm). Examine the data in Table 4 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from; finally, answer the questions below. Questions 1.
The level of osmotic pressure is equal in the intracellular fluid, and the extracellular fluid.’ (Study.com, 2015) ‘Osmotic pressure is vital within the human body because it allows water to enter a cell if there is lack of water, and vice versa, if there is too much water within one cell, the osmotic pressure will allows the electrolytes to exit a cell.’ (Study.com, 2015) ‘Intracellular fluid has important functions, it transports food within the cells, it also brings waste products from the cells so that they can be picked up and excreted from the body, and it maintains the shape and size of the cell.’ (Nursing411.org, 2015) ‘Extracellular fluid is located outside the body cells. The extracellular fluid consists of one-third of the water contained in the body. The extracellular fluid has many functions; it carries nutrients and oxygen to the body cells and waste materials from the cells. There are two types of extracellular fluid, including interstitial fluid and intravascular fluid.’
Label the drinking water samples with the numbers 1 and 5, the distilled water sample as 2 and the non drinking water samples from the lake as 3 and 4. 2. Set the selector switch on the side of the conductivity probe to the 0-2000 µS/cm range. Connect the conductivity probe to Logger Pro 3. Set up the data collection mode on Lab quest and select mode on the meter screen.
Water from a variety of sources that receive precipitation is being sampled. Using a pH meter, the pH of water samples is being measured. In the first approach using titration methods in combination with pH measurement, the volumes of sulfuric acid needed for reaching two different pH levels are being measured. Difference in the volume of sulfuric acid used, is an equivalent for the amount of CaCO3 expressed in grams per (gL-1) in the analyte. Therefore the alkalinity of water samples is being calculated.
Lab 1 – Introduction to Science Exercise 1: The Scientific Method Dissolved oxygen is oxygen that is trapped in a fluid, such as water. Since many living organisms require oxygen to survive, it is a necessary component of water systems such as streams, lakes, and rivers in order to support aquatic life. The dissolved oxygen is measured in units of parts per million (ppm). Examine the data in Table 4 showing the amount of dissolved oxygen present and the number of fish observed in the body of water the sample was taken from and then answer the questions below. QUESTIONS 1.
Unit 4. Case Study 1: Overcoming the Perils of Canoe Lake In this case study we will discuss how an ordinarily fun time at the lake with the family could potentially turn into a nightmare for the human body. Aside from the sunscreen, umbrellas, hats, and clothing you would normally bring with you for a day out on the lake you are also bringing along something you do not think about as often, your own personal protection and body guard from the outside world, the skin. As part of the integumentary system the skin maintains a constant body temperature, provides sensory information of environmental change, protects the body’s internal organs from the world outside, and can even heal itself when damaged. The skin is constantly protecting itself and the body from any invading microbes that it considers harmful.
The investigation is to examine symbiotic relationships between algae and the abiotic factor in relation to water PH levels. Generally speaking Algae is aquatic, meaning it grows in water, although some live on the creek bank or on top soil. In this investigation the main focus is aquatic algae. The soils that surrounded the creek banks PH was examined and was compared to the PH of the creek water of Priors creek. The PH is directly related to the algae consisting in the water.
This illustrates the affects of water velocity on movement and deposition of sediment. In addition, water velocity has been directly correlated to the distribution of organisms throughout a running body of water (Davis, 1989). In a shallow stream located in France, an abundance of both sediment and aquatic life was observed in the pool areas of the streams (Mermillod-Blondin, 2000). Marine biologists often use the mean velocity of water flow to compare the flow of nutrients and sediments. This same method can be used in our study.