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FISH
FISH

... from extinct reptiles based on the following evidence— amniotic eggs; nitrogenousrich body wastes called uric acid; similar skeletal features/hollow bones. Archaeopteryx—possible transition species between reptiles and birds. Another theory—reptiles and birds evolved from an earlier common ancestor. ...
Algae - City of Belmont
Algae - City of Belmont

... and others grouping together in colonies. These plant-like organisms play an important role in the aquatic ecosystem. Algae are an essential part of the food chain supplying food to aquatic insects, fish and crustaceans and assist in keeping the environment balanced. Algae also, like plants, generat ...
(b) Osmoregulation in a freshwater fish
(b) Osmoregulation in a freshwater fish

... the jawless fishes (e.g. lampeys), cartilaginous fishes (e.g. sharks and rays), bony, ray-finned fishes (most of the bony fishes such as trout, perch, pike, carp, etc) and the bony, lobe-finned fishes (e.g. lungfishes, ...
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floating aquatic plants and their impact on wetlands in turkey

... Birsen Kırım, Deniz Çoban, Mehmet Güler 1 Adnan ...
Be and look healthy from the inside out
Be and look healthy from the inside out

... minerals needed for different metabolic processes. Alkaline mineral salts play an important role in acid neutralization. A high number of minerals can be found in the bones. For example: 2% of body weight is calcium, 99% of which is in the bones. ...
Bio_principles of biology
Bio_principles of biology

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PowerPoint
PowerPoint

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impacts of metals on aquatic ecosystems and human
impacts of metals on aquatic ecosystems and human

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Anthropology - Toronto Zoo
Anthropology - Toronto Zoo

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Chordate Notes - SandersBiologyStuff
Chordate Notes - SandersBiologyStuff

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Vertebrate Land Invasions–Past, Present, and Future: An

... Wassenbergh 2013, in this issue) can both cause us to reconsider our preconceptions and generate new questions and experimental hypotheses. In addition, the use of new technologies and computational/mechanical systems (e.g., Karakasiliotis et al. 2012; Pierce et al. 2012) allows us to ask and answer ...
WHAT YOU SHOULD KNOW ABOUT AMPHIBIANS
WHAT YOU SHOULD KNOW ABOUT AMPHIBIANS

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Multiregional hypothesis explained
Multiregional hypothesis explained

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Mollusks - Pre
Mollusks - Pre

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JEBoutside_112151_112128_112110_112144 964..966

... camouflage themselves in much the same way. They hide in plain sight, and for these species, not being seen, heard or smelled is a matter of life and death. But how do prey animals ensure a convincing match with their surroundings? An exciting new paper by an international team of researchers led by ...
Lecture 3 – Cladistics
Lecture 3 – Cladistics

... iii. But both have a cranium and particular type of muscle (myomeres) that indicate they are vertebrates iv. But lack bone or scales like ostracoderms v. And since both Chinese fossils had developed dorsal fins, they are more advanced than hagfishes vi. So vertebrates probably diversified well befor ...
Evolution: Exhibition Notes 2
Evolution: Exhibition Notes 2

... Because fossils are the remains of once living organisms that were adapted to their environments, they can provide valuable information about what past environments were like. We can predict the environmental requirements of organisms in the past from those of closely related organisms living in the ...
STANDING WATERS: Insects and Molluscs
STANDING WATERS: Insects and Molluscs

...  3 to 4 mm long, but can jump over 30 cm through the air!!!!!!  Although, they aren’t aquatic.  Feed on algae, fungi, plants and plant detritus, sometimes dead crustaceans, worms, snails and protozoans. ...
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File - 1ESO Natural Science

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404 Error - Page Not Found| University of Houston

... quality is assumed to be good. If the only organisms found are those that tolerate low levels of dissolved oxygen, then the water can be considered poor quality and possibly polluted. It is important to note however, that some aquatic communities are naturally low in oxygen or will go through low ox ...
Chapter 17 Study Guide
Chapter 17 Study Guide

... j. Lungless salamanders likely evolved in cold streams where lungs would have been too buoyant. 9. Paedomorphosis a. Paedomorphosis is the preservation of pre-adult features into adulthood (i.e., they reach sexual maturity while retaining their gills, aquatic lifestyle, and other larval characterist ...
Identification And Life History Of Common Invertebrates
Identification And Life History Of Common Invertebrates

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Chapter 34 Outline
Chapter 34 Outline

... into a tube dorsal to the notochord. ○ Other animal phyla have solid nerve cords, usually located ventrally. ○ The nerve cord of the chordate embryo develops into the central nervous system: the brain and spinal cord. 3. The digestive tube of chordates extends from the mouth to the anus. ○ The regio ...
Ch. 34
Ch. 34

... into a tube dorsal to the notochord. ○ Other animal phyla have solid nerve cords, usually located ventrally. ○ The nerve cord of the chordate embryo develops into the central nervous system: the brain and spinal cord. 3. The digestive tube of chordates extends from the mouth to the anus. ○ The regio ...
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Aquatic ape hypothesis

The aquatic ape hypothesis (AAH), often also referred to as aquatic ape theory (AAT), is a proposal that the evolutionary ancestors of modern humans spent a period of time adapting to a semiaquatic existence. The hypothesis was first proposed by German pathologist Max Westenhöfer in 1942 and then independently by English marine biologist Alister Hardy in 1960; however, the arguments of both men failed to achieve significant popular notice. After Hardy, the theory's most prominent proponent was former television documentary writer Elaine Morgan, who wrote a series of books on the topic, and she achieved a larger awareness of the theory after her first work appeared in 1972. However, the scientific reception of her ideas remained mixed to negative, subject to several specific criticisms such as the lack of physical evidence offered.AAH arguments made by Morgan have asserted that female behavior was the most compelling driver of human evolution and that peaceful co-operation among early humans were due to largely feminine influences, Morgan being heavily influenced by the feminist movement. However, the extant scientific consensus is that humans first evolved during a period of rapid climate fluctuations between wet and dry periods, with a complex set of conditions existing that humans adapted to by intermingled male and female parenting efforts. Also, the mainstream view states that most of the adaptations that distinguish humans from the great apes are adaptations to a terrestrial situation, as opposed to an earlier, arboreal environment. Rejected by anthropologists broadly, few of them have explicitly evaluated AAH in scientific journals, and those that have reviewed the idea in depth have been largely critical. General analysis by non-specialists, such as by the news-magazine Discover, have also broadly rejected the theory.The AAH is one of many hypotheses attempting to explain human evolution through one single causal mechanism, but the evolutionary fossil record does not support any such proposal. The notion itself has been criticized by experts as being internally inconsistent, having less explanatory power than its proponents claim, and suffering from the feature that alternative terrestrial hypotheses are much better supported. The attractiveness of believing in simplistic single-cause explanations over the much more complex, but better-supported models with multiple causality has been cited as a primary reason for the popularity of the idea with non-experts. Advocacy for the AAH has been labeled by commentators such as science writer Brian Regal as being more ideological and political rather than scientific and hence, pseudoscientific.
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