In the posterior lobe of the pituitary gland
2 abiotic(non living) limiting factors are water(A) and food(B)
Any trait which has a completely genetic basis with no environmental factors playing any role are traits that are inherited in a completely environmental fashion. There are some traits which are purely genetic and are therefore also determined only through genes. However, the majority of (phenotypical) traits are inherited and determined both by genes and environment.
The color of a star is primarily determined by its surface temperature.
For example, the really hot stars, called White Dwarf stars, have a white surface temperature, while a cooler star would have a more red color.
Ruminant herbivores gain from the microflora in their gut through digestion of cellulose and in return, the microflora gets the nutrients from the ruminants. The shark doesn't benefit from the remora but the remora gets a free ride from the shark and it feeds on the leftovers from the shark's meal. The human host loses nutrients because the tapeworm gets to eat the food provided by the host. Cats provide shelter and food for the flea but the cat becomes anemic because of blood loss from its parasites.