Biodiversity has been on the decline over the past century and the background rate has been mostly accelerated by the humans. Considerable damage has already been done. Possible solutions have been discussed and categorising species according to how in danger they are is one of those solutions. Below are some of the threatened organisms in different continents around the world. TABLE OF CONTENTS Africa Mammals Birds Reptiles Amphibians Fishes Asia Mammals Birds Reptiles
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Invasive Species Threatens the Ecosystem Every life form all over the world depends on the ecosystem for its survival. However‚ the ecosystem can be threatened when there is an excess or drop in resources. Many people will argue that human beings are the primary cause of this economic imbalance‚ but are people the root of this problem? No. There is evidence that many invasive species all over the world has also threatened the ecosystem. All organisms have the potential to become invasive
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Amphibians are becoming a vanishing species. There are a number of causes for them dieing. But the most recent and worst cause has been discovered. It is responsible for killing off our amphibians. They are dieing by the thousands. They were able to survive and hold on through past extinction spasms‚ surviving even when 95 percent of other animals died out. They even stayed alive when the dinosaurs disappeared. If amphibians could live longer than dinosaurs‚ then why are
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Invasive Species: Asian Carp Asian carps are different species of fish that originated in many parts of Eurasia. There are 4 different types of Asian carps‚ but the silver carp and bighead carp are mostly found in the Mississippi River drainage basin and Illinois River. The silver and bighead carp first came to North America from China in 1973. Being filter feeders‚ they were imported to remove algae and suspended matter‚ ultimately trying to improve water qualities in aquaculture ponds. However
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1. Decodable Text * There are five levels of decodable text‚ ranging from highly decodable to minimally decodable. Highly decodable books use one-syllable and one-vowel-sound words‚ such as “cat‚” “fun” or “sit.” These might also use some short sight words‚ such as “a‚” “an” and “the.” Very decodable text still uses simple words‚ but those words may now have an extra letter or use blends that the students are learning in class‚ such as “this‚” “such” or “that.” Decodable text adds more of
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animals? There are several factors of which only a few will be discussed. One of the main aspects is that of habitat destruction. Of course our planet is continually changing‚ causing habitats to be altered and modified‚ but these tend to happen at a gradual pace. This allows most species to adapt to the changing environment‚ where only a slight impact may take place. However‚ when changes occur at a fast pace‚ there is little or no time for an individual species to react and adjust to the
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A keystone species is a species that has a disproportionate effect on its environment relative to its abundance. Such an organism plays a role in its ecosystem that is analogous to the role of a keystone in an arch. While the keystone feels the least pressure of any of the stones in an arch‚ the arch still collapses without it. Similarly‚ an ecosystem may experience a dramatic shift if a keystone species is removed‚ even though that species was a small part of the ecosystem by measures of biomass
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Endangered Species Endangered species are living things whose population is so reduced that they are threatened with extinction. Thousands of species are included in this category. The International Union for the Conservation of nature and Natural Resources publishes a list of threatened mammals‚ birds‚ reptiles‚ amphibians‚ and (many people do not consider them) plants .CAUSES OF EXTINCTION Millions of years before humans‚ extinction of living things was linked to geological and climate‚ the
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elephant has done it in 150 years? Well‚ scientists call this rapid evolution and it is all due to one very common problem (Environmental News Network et.al 2008). What I was able to find out though was that this evolutionary change is actually helping them survive. How you may ask? Well‚ one problem in today’s world that we all know about is poaching. Poaching has had a huge effect on many animals‚ but the biggest on the species of the elephant. Now‚ elephants are not just being killed for the fun
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Juliet C. Rosauro BSBA-MM 2-4D Loss of Biodiversity: How many species are endangered ? ENDANGERED SPECIES: has so few individual survivors that the species could soon become extinct overall or most of its natural range. Characteristics of Extinction-Prone Species: -Low reproductive rate -Specialized feeding habits -Feed at high trophic levels -Large size -Limited or specialized nesting or breeding areas -Found in only one place or region -Fixed migratory patterns -Preys on livestock
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