. change the voice
1. Some of us are am not following the safety measures .
2.my friend are being helped by the villager .
3.hard work can being the desired change.
4. he does what is prohibited .

5. APJ Kalam will be always remembered

Okay, biology isn't exactly my strongest subject (it never has been), but i'm pretty sure the answer is nucleotides. dna is made up of nucleotides. each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. there are four different nitrogen bases: adenine (a), thymine (t), guanine (g), and cytosine (c). a always pairs with t, and g always pairs with c.