1. Gary started having the symptoms of a cold the day after he went skiing with his friends. Gary doesn't understand why he was infected since he had a cold last year. Why did Gary develop a cold again this year?a. because Gary stayed out in the cold too long he when was skiing B. because a person must get a cold twice before the body becomes immune to it c. because the cold virus can reactivate in the body about once per year d. because there are many varieties of cold viruses that cause similar symptoms

is in the form atp or adenosine triphosphate

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

the answer is c. it will give up it's valence electron to the other atom.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves