All of the following are examples of geological features EXCEPT ridges
valleys
bridges
waterfalls

Natalie had random hand movements when she was two months old. when she was six months old, she used to grab a block with her whole hand. now at the age of ten months, she can grasp the same block with her thumb and forefinger. this sequence of growth in her hand and finger movements is according to the pattern.

How do you date a sample of rock that you suspect as being one of the earliest on earth

One of the purposes of transcription is to produce a sequence of bases that