The correct answer is: Blood type in humans.
The blood type in humans or ABO blood type is controlled by a single gene (the ABO gene) with three types of alleles (multiple alleles), a, b, i. a and b alleles express a special dominance relationship called codominance, meaning that they together form AB blood type. A is dominant over i so they together give A blood type. B is is also dominant over I, giving the B blood type.
The digestive system is parrallel to the excretory system, but not part of it. The digestive system is where the digestive process of getting energy from food. The excretory is where the blood enters the nephron. It filters out any kind of waste. The excretory is where the urine comes from. The digestive system doesn't produce urine. Urine is transported from the kidneys to the bladder. It does work together for the use of the body like basically everything in your body.
The mere exposure effect :this is a psychological phenomenon by which people tend to develop preference for things merely because they are familiar with them
Using my knowledge abiotic factors include things such as wind, rainfall, sunshine, etc. If there are multiple choices to choose from then I could be more specific.
Clouds are made up of tiny drops of water or ice crystals that settle in dust particles in the atmosphere.
