What is the advantage of having different shaped beaks? b
to look different other species
to protect itself from predators
to be able to eat the food readily available in the environment
to be able to tweet better
Ос
Od

What protects the lining of the stomach from acidic gastric juices?

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.

What is the number of phosphates in an atp molecule