These are all disadvantages but I would say that A and D or A and B are the most serious ones.
Use the basic engineering flow chart
Find your problem
Identify solution
Basic calculations
Prototype
Review
Does it work? If not start again from prototype
Adhesion of water to the surface of a material will cause an upward force on the liquid. The surface tension acts to hold the surface intact. Capillary action occurs when the adhesion to the surface material is stronger than the cohesive forces between the water molecules.
A gene pool is the set of all genes in any population that is of a certain species.
