an organism? -It could train them to respond to certain smells and respond in a certain way. How would natural selection affect an organism’s ability to sense and respond to this stimulus? -The organism depends on its ability to sense and respond. The organisms could compete for water or hydration. What other types of stimuli would be important for the organism to respond to? - An organism that is used to light is suddenly put in darkness‚ it may search for light. If an organism that
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1. Define ecology. Identify the two features of organisms studied by ecologists. Ecology is the scientific study of the interactions between organisms and the environment‚ which in turn determine both the distribution of organisms and their abundance. Ecologists study how interactions between organisms and the environment affect phenomena such as the number of species living in a particular area‚ cycling of nutrients in a habitat‚ and the growth of populations. 2. Describe the relationship between
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Characteristics of Living Organisms In order to identify living organisms‚ scientists listed 7 characteristics which all living organisms have: 1. Nutrition: Taking in nutrients which are organic substances and mineral ions‚ containing raw materials and energy for growth and tissue repair‚ absorbing and assimilating them. 2. Excretion: Removal from organisms of toxic materials‚ the waste products of metabolism and substances in excess. 3. Respiration: Chemical reactions that break
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characteristic that distinguishes that have signaling and self sustaining processes from those that don’t. If an organism can perform certain functions such as movement‚ respiration‚ sensitivity‚ growth‚ reproduction‚ excretion‚ and nutrition‚ it is classified as a living organism. Life began from the basic building block of all living things‚ called cells. All organisms derived from single celled organisms. Cells are the basic building blocks of life and are found in all living things. For example‚ a group
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‘the inert/non-living’ from ‘the living’ of which a an organism has to posses in order for it to be considered as a living being. These include self organization or movement‚ growth‚ reproduction‚ inheritance‚ feeding‚ excretion‚ sensitivity and adaptation. Moreover‚ the question of what life is takes us back to evolution‚ that is‚ for an organism to be considered living‚ it has to be part of the fossil record. Even so‚ there are living organisms which do not show some of these characteristics of life
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mainly about the different species he saw on the Galapagos Islands. Each island had a different variation of birds. He noticed that the beak sizes of the finches were different on each island because of the size seeds they ate. Darwin noticed that organisms reproduce more offspring than can survive. Each individual offspring has unique characteristics that can be hereditable. Most of Darwin’s observations focused on the idea of natural adaptions. Darwin noticed that the body parts an animal used
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Ecosystems at Risk Ecosystems and their functioning What is an ecosystem? Ecology – the science that examines the interactions between organisms and their living (biotic) and non-living (abiotic) environment. Groups of organisms and their biophysical environment interact and exchange matter and energy. Ecosystem – the dynamic complex of plant‚ animal and micro-organism communities and their non-living environment as a functional unit. Ecosystems are dynamic; constantly changing and adapting. Ecosystems
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Anything which we eat to live is called food. Food contains energy. The food (or energy) can be transferred from one organism to the other through food chains. The starting point of a food chain is a category of organisms called producers. Producers are‚ in fact‚ plants. So‚ we can say that all the food chains begin with a green plant (or grass) which is the original source of all food. Let us take an example to understand the meaning of food chain. Suppose there is a field having a lot of green
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Microbiology nutrition and growth Microbiology is a branch of science that deals with the study of small micro-organism that cannot be seen through naked eyes but only through the use of a microscope. Some of the Micro-organism in the environment include; bacteria‚ viruses and fungi to mention but a few. Whereas some Micro-organisms are associated with causing of diseases others are known for destroying the balance in the ecosystem. However‚ this is not always the case
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a lot of controversy on whether or not a virus is a living or non-living organism. The dictionary.com definition for life is‚ “the condition that distinguishes organisms from inorganic objects and dead organisms‚ being manifested by growth through metabolism‚ reproduction‚ and the power of adaptation to environment through changes originating internally.” Viruses have characteristics of both living and non-living organisms‚ for example‚ a living characteristic includes reproduction. A non-living
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