Why do we have rods and cones? Light falling on photoreceptors is transformed by retinal circuitry into a pattern of action potentials that ganglion cell axons convey to the visual centres in the brain. Two systems of photoreceptors exist – rods and cones – allowing the visual system to meet the conflicting demands of sensitivity and acuity‚ respectively. Rods and cones are distinguished by shape‚ type of photopigment they contain‚ distribution across the retina‚ and pattern of synaptic connections
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What is a Leap Year? A leap year is a year that has one extra day in it. A leap year occurs roughly every four years. Most years have 365 days‚ but a leap year has 366 days. The extra day is added onto the end of the shortest month‚ February; in a leap year‚ February has 29 days (instead of its usual 28 days). February 29 is called leap day. Why Do We Have Leap Years? A year is defined as the time it takes for the Earth to orbit around the sun once. It takes the Earth about 365 1/4 days to make
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What Commercials have done to the American Dream In the article “Master of Desire” Jack Solomon claims the American dream has two faces that contradict the dream and lures us to achieve social distinction and bask alone in the glory. Although this article was written in the 80’s when it comes to advertisement nothing has changed in the aspect that advertisers can still persuade us into believing that their product will make our life better. The two faces that are mentioned are communally
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In todays time most schools have a dress code. Most schools believe that dress codes help kids stay modest. Most students would beg the differ. Dress codes are not needed because they are a violation of student rights‚ distraction from the learning environment‚ and dress codes are sexist towards woman. Dress codes are offensive in a lot of different ways. Telling children how to dress is a violation of students rights. Students should be able to freely express themselves without
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CASE 46 Making Socially Responsible and Ethical Marketing Decisions: Selling Tobacco to Third World Countries Strategic decisions move a company toward its stated goals and perceived success. Strategic decisions also reflect the firm’s social responsibility and the ethical values on which such decisions are made. They reflect what is considered important and what a company wants to achieve. Mark Pastin‚ writing on the function of ethics in business decisions‚ observes: There are fundamental principles
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Why Sixth Graders Should Get the Opportunity To Have Recess Studies show that students need brain breaks in order to learn better. Therefore‚ sixth graders at Clear Creek Amana should have recess at least four times a week. By having recess‚ sixth graders will be better behaved‚ less stressed‚ and will actually learn more. First‚ sixth graders should have recess because most sixth graders need a break‚ and might not be used to a day with no breaks. Students need
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feel upset‚ mad or violated not being able to wear what they want to school. Students should have the right to wear what they please to school. At many schools‚ the dress code is unfair. It’s mostly only directed to females when it should be directed to males as much as it is to us girls. We should go to school to learn‚ not to be told we can’t wear what we want. This is causing students to get more and more angry about not being able to wear what they want. The dress code at most schools
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THREE REASONS WHY YOU SHOULD BREASTFEED As a new mother‚ you always want the absolute best for your newborn baby. Experts say breastfeeding is one of the best things a mother can offer her growing newborn. Here I present to you three reasons a new mother should choose to breastfeed rather than formula feed. Breastfeeding is much better because‚ it offers many nutrients and protection‚ it offers many benefits to mother and baby and it is more cost effective. The first reason why you should breastfeed
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opinion he has what it takes to be our next president. Mr. Sanders and I agree on many situations going on in our world today‚ the environment‚ foreign policy‚ the economy‚ healthcare‚ education etc. Mr. Sanders is a democratic who agrees that environmental actions should be taken; for example Mr. Sanders thinks national parks should be preserved and protected by the federal government. Mr. Sanders response was “yes‚ and the government should protect more land” there are other reasons why Bernie Sanders
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shades of colors. Guppies which are a certain type of small fish mostly Found in trinidad and Barbados where they often do something such as penny pecking which is pecking at an object floating atop of the water as if it is a food and they make the fish peck at the object more depending on its color. Guppies color perception is based on the rods and cones inside they’re eye‚ Guppies have something called color vision or Color vision is the ability of an organism or machine to distinguish objects based
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