Which is a harmful role of bacteria? making antibiotics
producing oxygen
decomposing waste
causing tooth decay

Chicken pox and hepatitis are bacterial diseases. true or false?

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials