Select the correct answer. Tetanus, often called lockjaw, is a serious disease that can arise from an infection caused by a puncture wound. A tetanus
vaccine became popular in the 1940s when it was used to protect soldiers during World War II. The chart shows tetanus
cases in the United States since 1947.

2positives of biotechnology: 1. plants have become more resistant to viruses and other communicable pests.2. with the of biotechnology, we have been able to produce better tasting fruits as well as vegetables.2 negatives of biotechnology: 1. biotechnology poses a number of environmental threats. genetically modifies crops often infect monarch butterflies and other insect species.2. viruses could combine with crops.

List the following gasses