The surface layer of the water freezes solid creating a barrier that insulates the ice below so that it keeps a steady temperature usually a few degrees above freezing (32 degrees).
It is in between our joints to hold bones together along with muscle
Crossing-over is the exchange of genetic material between homologous chromosomes. It results in new combinations of genes on each chromosome. When cells divide during meiosis, homologous chromosomes are randomly distributed to daughter cells, and different chromosomes segregate independently of each other.
The mRNA needs to copy the gene sequence of the dna before it leaves the nucleus to the tRNA and rRNA
The answer to that will be prokaryotic
