308 Grammar and Language Workbook, Grade 6Copyright © by Glencoe/McGraw-HillComposition
Exercise 2 Write a topic sentence for this paragraph. Then revise the paragraph to
support and develop the idea in your topic sentence.
This means that they do not have a backbone. Many kinds of animals are included in
this category. Corals and sea anemones, which are both in the sea, have a plantlike
appearance. Other invertebrates are agile predators. Some invertebrates are very simple
animals that never move. A spider can dart quickly when attacking its prey. Crabs and
lobsters can move quickly. Beetles, butterflies, and bees are all in this class. Invertebrates
such as worms, snails, and starfish move at a slower pace. One of the largest classes is the
insects. You can see from these examples there are many different kinds of invertebrates.
Most of the world’s animals are invertebrates. This means that they do not have a backbone. Many
kinds of animals are included in this category. Some invertebrates are very simple animals that never
move. For instance, corals and sea anemones have a plantlike appearance. However, other invertebrates
are agile predators. A spider can dart quickly when attacking its prey. Crabs and lobsters can move
quickly, too. Invertebrates such as worms, snails, and starfish move at a slower pace. One of the largest
classes of invertebrates is the insects. Beetles, butterflies, and bees are all in this class. You can see
from these examples there are many different kinds of invertebrates.