You are conducting an experiment with two very reactive substances. one will react with oxygen (o) and other substances in the air, and the other will react to metal in a container. what type of environment can you seal them in so they only react with each other?

Which best describes the digestive system of arthropods? a incomplete, two openings b complete, one opening c two-way, one opening d one-way, two openings

When analyzing tree rings, what do scientists assume a thin ring indicates?

3points hurry! what is the relationship between biotechnology, sharkskin, and disease resistance? bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it. disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks. scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease. sharkskin produces many chemicals that can be collected and used to create antibiotics.