The writer develops a main idea with specific information, and presents the information in a logical order. However, three sentences do not relate to the main idea. To achieve paragraph unity, cross out the three sentences that do not relate to the main idea. Puerto Rico's agreeable climate is one of the country's greatest assets. Sunshine and warm temperatures make the island a popular destination for vacationers.
Tourists also travel to other islands in the West Indies.
The pleasant weather conditions in Puerto Rico also attract businesses and industries, including wholesale and retail trade operations, insurance companies, and manufacturing plants. In addition, the island's climate benefits agriculture, providing fine conditions for growing sugar cane, coffee, fruits, and other crops. Sugar cane is the main source of sugar. Finally the warm, moist climate encourages the growth of beautiful flowers, plants, and trees, making the island a scenic wonder. Perhaps Puerto Rico will become the fifty-first state.