Animals are multicellular, heterotrophic organisms. Animals evolved about, 700 million years ago, descended from unicellular organisms that exist in wet environments and start utilizing oxygen in order to generate energy by breaking down the food particles. Numerous species were evolved from sponges, mollusks (like clams and snails), annelids (for example, segmented worms), and arthropods like insects, spiders, and crustaceans.

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Chapter 17, Problem 5TQ

Summary Introduction

Animals are multicellular, heterotrophic organisms. Animals evolved about, 700 million years ago, descended from unicellular organisms that exist in wet environments and start utilizing oxygen in order to generate energy by breaking down the food particles. Numerous species were evolved from sponges, mollusks (like clams and snails), annelids (for example, segmented worms), and arthropods like insects, spiders, and crustaceans.

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Chapter 17, Problem 5TQ

Summary Introduction

Animals are multicellular, heterotrophic organisms. Animals evolved about, 700 million years ago, descended from unicellular organisms that exist in wet environments and start utilizing oxygen in order to generate energy by breaking down the food particles. Numerous species were evolved from sponges, mollusks (like clams and snails), annelids (for example, segmented worms), and arthropods like insects, spiders, and crustaceans.

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Chapter 17, Problem 5TQ

Summary Introduction

Animals are multicellular, heterotrophic organisms. Animals evolved about, 700 million years ago, descended from unicellular organisms that exist in wet environments and start utilizing oxygen in order to generate energy by breaking down the food particles. Numerous species were evolved from sponges, mollusks (like clams and snails), annelids (for example, segmented worms), and arthropods like insects, spiders, and crustaceans.

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Chapter 17, Problem 5TQ

Summary Introduction

Animals are multicellular, heterotrophic organisms. Animals evolved about, 700 million years ago, descended from unicellular organisms that exist in wet environments and start utilizing oxygen in order to generate energy by breaking down the food particles. Numerous species were evolved from sponges, mollusks (like clams and snails), annelids (for example, segmented worms), and arthropods like insects, spiders, and crustaceans.

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Chapter 17, Problem 5TQ

Summary Introduction

Animals are multicellular, heterotrophic organisms. Animals evolved about, 700 million years ago, descended from unicellular organisms that exist in wet environments and start utilizing oxygen in order to generate energy by breaking down the food particles. Numerous species were evolved from sponges, mollusks (like clams and snails), annelids (for example, segmented worms), and arthropods like insects, spiders, and crustaceans.

Answer 6

Chapter 17, Problem 5TQ

Summary Introduction

Animals are multicellular, heterotrophic organisms. Animals evolved about, 700 million years ago, descended from unicellular organisms that exist in wet environments and start utilizing oxygen in order to generate energy by breaking down the food particles. Numerous species were evolved from sponges, mollusks (like clams and snails), annelids (for example, segmented worms), and arthropods like insects, spiders, and crustaceans.

Answer 7

Chapter 17, Problem 5TQ

Summary Introduction

Animals are multicellular, heterotrophic organisms. Animals evolved about, 700 million years ago, descended from unicellular organisms that exist in wet environments and start utilizing oxygen in order to generate energy by breaking down the food particles. Numerous species were evolved from sponges, mollusks (like clams and snails), annelids (for example, segmented worms), and arthropods like insects, spiders, and crustaceans.

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Ch. 17 - Prob. 1TQ Ch. 17 - Prob. 2TQ Ch. 17 - Prob. 3TQ Ch. 17 - Prob. 4TQ Ch. 17 - Prob. 5TQ Ch. 17 - Prob. 6TQ Ch. 17 - Prob. 7TQ Ch. 17 - Prob. 8TQ Ch. 17 - Prob. 9TQ Ch. 17 - Prob. 10TQ

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