17. Fevers in mammals are a natural defense against bacterial and viral infections. Viruses and bacteria rely on properly shaped enzymes to complete their life cycles
during an infection. State one hypothesis about how fevers help fight infections.

amber has allowed scientists to study dna that has been preserved over millions of years.

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.