3. Why did Ibrahim conclude that the dorsal spines were not used to support a hump or regulate body temperature?

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture

Which kind of mutation has occurred when the codon for an amino acid is changed to a stop codon? a. a silent mutation b. a missense mutation c. a frameshift mutation d. a nonsense mutation

Which part of the spine is likely to cause a nerve signal to travel faster? a. backbones b. white matter c. nuclei d. gray matter