How is an ecosystem like a game of jenga

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are