Mutation causes a defect in one of the three enzyme that processes pyruvate
If the food type changes in a given environment, then the amount of each type of bird beak will change as birds with beaks more suited to the available food will consume more successfully over time. <span>The independent variable of the lab is the type of food that is available to the birds. The dependent variable of the lab is the frequency of each type-size and shape-of beaks. The conclusion will state that favourable traits place one species in a more optimal position to survive in a given envronment.</span>
Because most of the time they have insulation in them so that it keeps your house warm.
in the stars are three main system so I shall say the difference is that they are not in right position
