Which two of the following methods were first introduced to slow decay? drying refrigeration canning salting pick or than one

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

What sre the effects of hemolytic disease of a newborn

Why zebra fish experience similar genetic disease as human