No, polar bears does not migrate.
It's a mutualism relationship because both species can benefit from each other.
Homologous chromosomes, is a pair of chromosome connected by a centromere. In sexual reproduction, the chromosome of the mother and the chromosome of the father pairs together.
Fill a graduated cylinder to 10mL, place the rock inside and calculate the difference in mL.
<span>(3) It cannot perform metabolic processes.</span>