DELHI PUBLIC SCHOOL‚ JALANDHAR Holiday Homework (2013-2014) Class VIII ENGLISH Note : The work should be done in the Red Notebook. General instructions: Answer all fill in the blanks on the sheet itself Answer all the short questions and the long questions in a new thin Red notebook Stick to the word limit Article writing Write articles on the following topics:1. People have become overly dependent on technology. 2. Most study- abroad programs should be renamed “party abroad”: they are
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Biology‚ the Study of Life C H AP T E R O U T LI N E Science Helps Us Understand the Natural World 1.1 Scientists use a preferred method 4 1.2 Control groups allow scientists to compare experimental results 6 THE CELL THEORY: 1 Fire Ants Have a Good Defense ire ants have a red to reddish-brown color‚ but even so‚ they most likely take their name from the ability to STING. Their stinger protrudes from the rear‚ but in a split second‚ they can grab a person’s skin with their mandibles and
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G1‚ G2 & G3 // 5.1‚ 5.2‚ 5.3 5.1.1 Define species‚ habitat‚ population‚ community‚ ecosystem and ecology Species: A group of organisms that can interbreed and produce fertile‚ viable offspring Habitat: The environment in which a species normally lives or the location of a living organism Population: A group of organisms of the same species who live in the same area at the same time Community: A group of populations living and interacting with each other in an area Ecosystem: A community
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I. Definition of Animal Behavior: Any observable thing an animal does a. Covers broad range of activities from involuntary muscle movements to animal intelligence an social behavior b. Why? i. Exploit animals more efficiently 1. Want to domesticate animals 2. Use as food ii. Protect and conserve animals better iii. Academic reasons c. What kinds of questions? iv. Mechanistic: how? v. Evolutionary: Survival
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* NCERT 1. Reproduction in Organisms INTRODUCTION Biology in essence is the story of life on earth. While individual organisms die without fail‚ species continue to live through millions of years unless threatened by natural or anthropogenic extinction. Reproduction becomes a vital process without which species cannot survive for long. Each individual leaves its progeny by asexual or sexual means. Sexual mode of reproduction enables creation of new variants‚ so that survival advantage is enhanced
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Cell Biology Exam 1 Notes Lecture 1: Introduction to Cell Biology • Biology is studied at different levels of organization Time Scale • [Figure 1-9] How big is a cell and how big are its parts? • There are important similarities that all cells share; however‚ there are also important differences among various cell types (for example‚ animal cells vs. bacterial cells) • [Figure 3-23] The inside of a cell is loaded (crowded
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Motion NCERT Chapter Questions and Answers and other Q & A Q1: An object has moved through a distance. Can it have zero displacement? If yes‚ support your answer with an example. Answer: Yes an object can have zero displacement even though it has moved through a distance. It happens when the object moves back to its original position i.e. final position coincides with the starting position. Example: Suppose an object travels from O to C and then comes back to original position O. Total
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Quiz 1 Tuesday‚ September 20‚ 2011 10:59 PM 1. Ecology o The study of interactions of organisms with their environment 2. Ecosystems o Organisms and their interactions with one another as well as their interactions with the environment o Ecosystems are like puzzles; if you disturb one part‚ you disturb others o Energy maintains an ecosystem 3. Environment o 2 parts • Biotic Part ▪ Living organisms • Abiotic Part
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SBI3U1-04 Final Exam Study Notes Unit 1: Diversity of Living Things 1.1 Importance of Biodiversity Spotlight on Honeybees Very important‚ pollinate flowers allowing plants to reproduce Play vital role in food chain‚ if they die‚ all organisms that rely on them will die as well Dying because of pesticides‚ parasitic Varroa mite (infects beehives and sucks of bees’ blood)‚ the Israeli acute paralysis virus (immobilizes and kill bees) No genetic diversity = Less resistant to parasites
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Unit One: Animal Structures and Functions‚ Answers to Review Questions Respiratory System 1. Indicate the importance of gas exchange in all living organisms. Respiration is gas exchange (Oxygen and Carbon Dioxide) with the external environment. All living things respire. Gas exchange is important so that cellular respiration can take place and energy can be made for the cells. 2. Distinguish among the terms cellular respiration‚ external respiration and internal respiration
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