They have similar chromosomes
Bears are omnivores (and scavengers), meaning they eat both plants and animals.
it can be both a primary consumer (if it eats plants) and secondary & tertiary consumers (if it eats a plant-eating animal). so it depends on what it eats.
This is mostly true for chemical properties. Physical properties however don't require other substances so as to check them out such as changing the state of matter, Turning water into ice does not require other substances, only water, and yet you can check the physical properties with it. Chemical properties are checked with experiments and careful observation of what happens when things are mixed.
I think it is a closed circuit
