How do biotechnologists with modern mining methods? a) they evaluate the microbes contained in minerals to determine the grade of the ore. b) they devise methods to kill the microbes in minerals to make the ore more profitable. c) they look for ways to genetically engineer microbes to aid in obtaining specific minerals. d) they propose ways to genetically engineer microbes to reduce gases created by mining.

The correct answer is C: They look for ways to genetically engineer microbes to aid in obtaining specific minerals. The use of biotechnology for improved metal abstraction has been proven at a large scale for metals such as gold and copper. It is hoped that more efficient extraction of metals by using biotechnology can lower the costs of mining and improve profitability.

Where are the options?

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.