Which is true of all organs in the human body? They are made up of two or more tissue types. They produce red and white blood cells. They remove harmful substances from the body. They are composed of one main type of cell.

Found evidence that the continents were joined together at one time.

9. wind power creates pollution. water air soil noise

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.