C. crossing over This is because each gene have a piece of each other Hope this helped=)
Semipermeable means only certain substances can pass through. I imagine you are talking about cell membranes which are semipermeable. This means vital things like oxygen and nutrients are able to pass through the membrane, while not allowing everything to enter the cell
Answer:
I think you answered your question but if not A
Explanation:
All the other answers are just dumb
B as it's not government regulations, technology or funding
