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New PDF release: Animal Weapons: The Evolution of Battle

By Douglas J. Emlen

ISBN-10: 142994739X

ISBN-13: 9781429947398

The tale at the back of the beautiful, severe guns we see within the animal world—teeth and horns and claws—and what they could let us know in regards to the approach people boost and use hands and different weapons

In Animal guns, Doug Emlen takes us open air the lab and deep into the forests and jungles the place he's been learning animal guns in nature for years, to give an explanation for the approaches in the back of the main fascinating and curious examples of utmost animal weapons—fish with mouths better than their our bodies and insects whose heads are so filled with muscle they don't have room for eyes. As singular and weird as a number of the guns we stumble upon on those pages are, we examine that comparable elements set their evolution in movement. Emlen makes use of those styles to attract parallels to the best way we people strengthen and hire our personal guns, and feature because conflict started. He seems at every thing from our armor and camouflage to the evolution of the rifle and the constructions human populations have equipped throughout varied areas and eras to guard their houses and groups. With attractive black and white drawings and lovely colour illustrations of those strategies at paintings, Animal guns brings us the full tale of the way guns succeed in their so much oversized, dramatic capability, and what the implications we witness within the animal global can let us know approximately our personal dating with guns of every kind.

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Additional resources for Animal Weapons: The Evolution of Battle

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39 Division P roblems that take a group and split it into smaller equal groups use division. Your heart beats about 4,200 times in an hour. About how many times does your heart beat in a minute? 1 Read. You know your heart beats about 4,200 times an hour. You know there are 60 minutes in an hour. You want to know about how many times your heart beats in a minute. 2 Plan. You are taking the total number of heartbeats in an hour and dividing it into beats per minute. You can write a division equation to solve the problem.

Each student won exactly 1 game of checkers. There were no ties. How many games were played? 1 Read. You know there are 4 students. You know each had won 1 game. You want to know how many games were played. 2 Plan. Look at a smaller number first and see if you can figure out how to solve the problem. 28 Easier Problem 3 Solve. Each time a game is played, there is one win and one loss. Count the number of wins to find the number of games. If there are two students, and each wins one game, then there are two wins, or two games.

You can write an addition equation to combine the two families. Addition puts more than on e group togethe r. 3 Solve. Write a sentence to describe the problem. The Green family plus the Lopez family equals the total number of people. Write the sentence using math symbols and the numbers you know. 4 ϩ 6 ϭ the total number of people Add. 4 ϩ 6 ϭ 10 There are 10 people staying in the Lopez house. 4 Check. Does your answer make sense? Yes. Is the addition correct? You can check addition by using the opposite operation, subtraction.

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Animal Weapons: The Evolution of Battle by Douglas J. Emlen

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