G6 Tri. 2 Introduce a Topic W.6.2a Practice

A student is writing a science report for class about the planet Mars. The student wants to revise the draft to include a better introduction to the topic. Read the draft of the project and complete the task that follows.

They live in colonies with thousands of other bees and work together to make honey. Honeybees communicate through special dances that tell other bees where to find flowers. During winter, they cluster together in their hive to stay warm. A single colony can produce up to 60 pounds of honey in one year.

Choose the sentence that would BEST introduce the topic.

It stretches over 13,000 miles across northern China and took over 2,000 years to build. Millions of workers, including soldiers, peasants, and prisoners, helped construct this massive barrier. The wall includes watchtowers, fortresses, and gates that were used for defense and communication. Today, it attracts millions of visitors from around the world.

Choose the sentence that would BEST introduce the topic.

Paper, plastic, glass, and metal can all be processed and turned into new products. This process helps reduce the amount of waste that goes to landfills and conserves natural resources. Recycling one aluminum can saves enough energy to power a television for three hours. Many communities have curbside pickup programs to make recycling easier for families.

Choose the sentence that would BEST introduce the topic.

They have waterproof feathers and a layer of fat that keeps them warm in freezing temperatures. Most species live in the Southern Hemisphere, with the largest populations found in Antarctica. These birds cannot fly, but they are excellent swimmers who can dive up to 500 feet deep to catch fish. Emperor penguins are the tallest species, standing nearly four feet high.

Choose the sentence that would BEST introduce the topic.

They form when melted rock, called magma, rises from deep within the Earth and erupts through the surface. The "Ring of Fire" around the Pacific Ocean contains about 75% of the world's active volcanoes. Volcanic eruptions can create new islands, destroy entire cities, and affect weather patterns around the globe. Mount Vesuvius in Italy famously buried the city of Pompeii in 79 AD.

Choose the sentence that would BEST introduce the topic.