The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 31, Problem 7TYK

Summary Introduction

Introduction:

The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 31, Problem 7TYK

Summary Introduction

Introduction:

The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.

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Answer 3

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 31, Problem 7TYK

Summary Introduction

Introduction:

The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.

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Answer 4

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Definition Definition Organism that lives in the body of another organism and obtains food at the expense of the host. A parasite can directly or indirect harm the host. There are two kinds of parasites: internal and external. An internal parasite lives inside another organism and is known as an endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite. Protozoa and helminths are examples of major human parasites.

Chapter 31, Problem 7TYK

Summary Introduction

Introduction:

The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.

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Answer 5

Chapter 31, Problem 7TYK

Summary Introduction

Introduction:

The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.

Answer 6

Chapter 31, Problem 7TYK

Summary Introduction

Introduction:

The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.

Answer 7

Chapter 31, Problem 7TYK

Summary Introduction

Introduction:

The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.

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Answer 11

Ch. 31.1 - 1. What characteristics distinguish animals from...Ch. 31.1 - How does the ability of animals to move through...Ch. 31.2 - What is a tissue, and what three primary tissue...Ch. 31.2 - What type of body symmetry do humans have?Ch. 31.2 - What is the functional significance of the coelom?Ch. 31.2 - Prob. 4SB Ch. 31.3 - Which major groupings of animals defined on the...Ch. 31.3 - Prob. 2SB Ch. 31.4 - Prob. 1SB Ch. 31.4 - Prob. 2SB

The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.

Solution Summary: The author states that the Annelida phylum includes the most abundant animals in the soil.

Concept explainers

Introduction:

The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.

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Chapter 31 Solutions

The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.

Solution Summary: The author states that the Annelida phylum includes the most abundant animals in the soil.

Concept explainers

Introduction: The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.

Want to see the full answer?

Chapter 31 Solutions

Introduction:

The topmost layer of the earth comprises of soil, which sustains life. Soil is home to millions of animals. They live in soil for protection from the weather as well as predators. Animals of the phylum Annelida, such as nematode and arthropods, are completely dependent on soil.