Why are asteroids irregular in shape 1. because their gravity pulls everything towards the center of the asteroid 2. because their gravity deforms the rocks present on their surface 3. because they have less mass than planets and the fire have more gravity 4. because they have less mass than planets and therefore have less gravity

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Which step is not included in the step approach to calculating the greatest common divisor?

9. what area of study applies scientific findings to create ways for solving problems or improving life? a biogeology b mathematics c manufacturing d engineering