If there are 20,000 students in a university, how many would you estimate to have the rh-blood type? (using hardy-weinberg's)

The chemical form of energy that is useable by the cell to do work

Is there any solid scientific evidence that humans have been cloned?

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.