How can a growing animal get calcium to make new bone tissue?

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

2points what is the term for a female reproductive cell? a. egg b. chromatid c. allele d. fertilization

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.