Which of these best predicts the length of time a star "lives" on the Main-sequence and the path it follows as it evolves over time? its mass
its color
its name
its location

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

What would be the result if crossing over did not happen during meiosis in humans? a. there would be less genetic variation in humans. b. parents would be more likely to look like their children. c. the human population could not reproduce. d. children would have more chromosomes.

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