Where in a river would you find fish that are adapted to low light and low oxygen levels?
a) at the source
b) in the mid-river
c) near the mouth
d) no place in the river is characterized like this.

Florian discovers a rock that is broken into pieces. each piece has several bands. which type of rock does florian predict these pieces will change into when subjected to heat and pressure? igneous magma metamorphic sedimentary

As a small change in a person's dna can cause a genetic disorder

What advantages does a pedigree have over a written passage?