What characteristics do all living things share a.) they are made of cells b.) they give off carbon dioxode c.) they are mobile d.0 they have a heart

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

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

2. if someone had the list of traits you provided in question 1, do you think he or she would be able to find you in a group of 1000 people? why or why not? if not, what other information encoded in your genes might distinguish you from the others in the group? what are other traits that are encoded for by dna?