Answer:
Climate change can melt ice in cold regions, and because ice is freshwater it can change the salinity of the oceans. Some marine animals may not cope with these conditions and may die as a result. This threatens biodiversity because there would be less species of marine life in our oceans.
Active genes are found in the EUCHROMATIN of eurkaryotic chromosomes.
Euchromatin is a type of chromatin which is composed of DNA, RNA and proteins and which is enriched with active genes. Euchromatin is the most active portion of the genome inside the cell nucleus. For humans, 92% of their genome is made up of euchromatin.
A vein. This is because veins carry deoxygenated blood back to the heart.
Answer:
Explanation:
Because in the fetus stages of fraternal twins two different eggs get fertilized. Therefore, genetics won't be the same for both twins. But if they were identical twins the fertilized egg was to divide and the two zygotes would've carried the same genetics of each other.