Research the following problem using a search engine such as www.altavista.com or www.google.com. Please avoid doing searches with AOL, Ask An Expert, or Ask Jeeves. They do not provide the full breadth of Websites needed to investigate scientific topics. Before pursuing this activity, first come up with a list of key words or phrases you would need to perform an accurate and concise search.
Some friends of yours who were growing vegetables in their garden had unusual luck this year. They ended up with more green beans and tomatoes than they could use or give away. They decided to can some of the vegetables for storage. They spent a whole day preparing both the beans and tomatoes by placing them in a small pressure cooker to sterilize the food and seal the jars. Provide an argument convincing your friends that they could have saved time by only boiling the tomatoes to get adequate preservation.
