Answer:
The total number of chromosome in a skin cell is equal to 78
Explanation:
The sperm is usually haploid i.e it will contains only half of the total chromosome number.
Therefore , if the total number of chromosomes is "n" , then the number of chromosome in the sex cell will be "n/2"
Thus, 39 chromosome is just the half of total chromosome number.
Now a skin cell is a diploid cell and it will contain all the chromosome i.e "n"
As we know

Hence, the total number of chromosome in a skin cell is equal to 78
G 5:3
that would be your answer
Algae live in bodies of water and damp places and are commonly found in both aquatic and terrestrial environments. Terrestrial algae mostly live in moist, tropical areas. They prefer wet places because they do not have vascular tissues and the other necessary adaptations to survive on land.