What traits do their parents probably have? Use what you know about dominant and recessive traits to explain your answer. Remember a capital letter represents a dominant trait. B= brown eyes b=blue eyes

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.

Acommon kind of mechanical weathering is called

Explain the process that creates the heat of the sun?