How can you identify matter?

Which pattern most likely came from a gunshot and which one was produced from a blow on the head? explain your answer?

You can tell from this karyotype that the individual is female because the karyotype has two chromosomes labeled

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.