Why do heart cells have different characteristics than skin cells?(1 point) Heart cells reproduce by cell differentiation. Heart cells have different DNA than skin cells. Heart cells reproduce by mitosis. Heart cells express different genes than skin cells.

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems