Marisa Trego Chapter Summary

The origin of modern day whales, a mystery that has puzzled paleontologists for years, may have just been solved with the discovery of an ankle bone. This discovery might sound simple and unimportant, but the bones of these ancient animals hold many unanswered questions and provide solid proof of origin and behavior. The relationship between whales and other animals has proven to be difficult because whales are warm-blooded, like humans, yet they live in the sea. The fact that they are warm-blooded suggests that they are related to some type of land animal. However, the questions of exactly which animal, and how whales evolved from land to water, have remained unanswered until now.

Harrison,Roy M. and R.E. Hester. Alternatives to Animal Testing.Royal Society of Chemistry, 2006.Issues in Environmental Science and Technology.

In the last test, we had to test out a mystery powder (powder A, B, C), in its own separate test tube, in order to solve the Sherlock Holmes Mystery. Our group had powder C. When we mixed water in the mystery powder, it did not dissolve. When the litmus paper was put into the test tube it turned blue. When the vinegar was mixed it bubbled/foamed up. When we mixed the iodine solution, there was no reaction and the solution turned to a dark brown/black color. When we mixed in the baking soda there was no reaction and it turned to an even darker color.

Furthermore, the marine mammal science community, which has long maintained a neutral stance on the question of whether orcas are a suitable species for captive display, has finally recognized the need to engage. An informal panel discussion on captive orcas is scheduled at the 20th Biennial Conference on the Biology of Marine Mammals in December, the first time this topic will be openly addressed by the world's largest marine mammal science

The unknown sample was then heated in boiling water in step 5. The reason for heating the

The primary goal of this laboratory is to correctly identify an unknown substance. To achieve this task, one may use various tests that reveal both chemical and physical properties of a substance. By comparing the results of a known substance and the unknown substance, one may eliminate alternative possibilities and more accurately predict the undisclosed compound. Furthermore, by performing these tests, data can be collected and verified regarding chemical and physical properties of the unknown. Understanding the chemical properties of a known substance aids one’s understanding of the unknown based on comparative analysis of the results of the tests.

Historical levels of the Southern Resident Orca population are currently estimated to have been as high as 200 (Fisheries.noaa.gov, 2015). The population as of 31st December 2015 was calculated at just 84 individuals (Center for Whale Research, 2015). There is limited data on the population before the mid 70’s so it is unknown what the population pattern looked like prior to this. Appendix A shows a graph documenting the population data found by a census started in 1974, as well as modelled data from 1960 to 1974. The graph starts with a low population, possibly explained by the frequent capture of live animals for marine parks (National Oceanic and Atmospheric Administration, 2014, p. 3). After this period the graph shows fluctuations in the population, then a steady growth resulting in a peak in 1995, then a sharp decline – almost 20% until 2001. This fast decline is what prompted governments to first list the population a threatened (United States Environmental Agency, 2014). The population has remained stable in the following years but now has an endangered status (Fisheries.noaa.gov, 2015).

Purpose: To use indicators to test for the presence of organic compounds in certain substances.

The 59-year-old author, Sy Montgomery, has written 20 books, each based on a specific research or expedition she has taken part in. Her studies, which she descriptively incorporates into her novels, have warranted her various book awards and acclaims. She plunges herself into the lives and mysteries of Earth’s wildlife in order to gain a further understanding of how particular organisms thrive in their wild, dangerous environments. Although Montgomery was no expert in the field of cephalopods, she quickly learned all she could about the intriguing invertebrates through fellow researcher, experts, aquarists, divers, and colleagues encountered throughout her studies about octopuses. Through diligent research via articles, studies, field

In the film we watched how scientists are trying to explain the mystery involves in the declining number of ocean lion. The scientists in Alaska are making some investigations; they already have set down some hypothesis for the disappearances of ocean lion. Their hypothesis state that the cause of the declining in number of the ocean lion can be caused by their food, the oil spill, or diseases. In this experiment, they are searching to identify the factors that are causing the premature dead of these young animals. They said because there is not body to study is hard to know what is happening to the ocean lions. For this reason, the scientists are taking some ocean lions from their natural habitat and are testing their DNA to identify any

Cetacean bycatch is an ongoing problem in the oceans of the world. Cetaceans are defined as whales, dolphins and porpoises(CBRC 1). Bycatch is “marine mammals that are “captured” but discarded”(Read 2). This happens when fishing industries are fishing for a certain type of marine animal and other marine animals are caught accidentally along with the intended catch. Many times, this leads to the death of the animal that was not meant to be caught, and the animal is tossed back into the ocean. This happens with all kinds of marine life, and it has caused the depletion of many different species. However, this is specifically bad for cetaceans, such as dolphins and whales, because they have such a long lifespan(Brown 2). They also take a very long time to mature(Brown 2). These factors make catching these animals very detrimental to the species as a whole because it takes longer for them to reach an age where they can reproduce(Brown 2). The population of many cetaceans have decreased exponentially. When there is someone watching the nets that cetaceans are accidentally caught in, many times they can be saved. However, there are only select few types of fishing methods that do this, and they are not of the prevalent fishing methods that produce cetacean bycatch. This is a problem because there is a connection between most living animals. If a certain part of the connection is eliminated, it will all fall apart. For example, the relationship between

The next innocent animal forced to cope with global warming is the whale. With the ocean waters warming more and more, the patches of zooplankton that female whales need to “bulk up” for a full pregnancy and being able to produce milk for her young. When the amount of zooplankton is too low, the right whale,

Maria Pons, residence of Tarragona wife and mother of two daughters as a candidate for the red Party for the City Council of Tarragona. She has 37 years old, she has a degree in social education from the Universitat Oberta de Catalunya. Working for 13 years as director of a centre for cerebral palsy of Being part of the management team, coordination Technique in daily activities, in the determination of the strategic lines. In her free time, have a blog where she has published some articles of girls with Rett syndrome. Moreover, she likes spending a lifetime involved with social movements and community activity. Maria love Tarragona, she’d lived here all his working life. It’s the most exciting and diverse

The scientist’s wanted to figure out how the sharks knew where to go and end up on the same beach year after year. So they conducted some research and realized that the sharks are using their excellent sense of smell to get them to the same location year after year. They tagged and tracked 26 sharks to determine if this theory they proposed was indeed true. They wanted

     After the column the separated compounds enter the detector, which measures a physical or chemical property of each, now relatively pure, compound and creates a proportional electronic signal. By calibrating with a standard mixture of known compounds, the nature of the compound in the