True or false human body cells have 23 chromosomes

The increase of pollutants from in mexico has raised concerns about garage to health and the environment

Trade routes emerged along which coast when arab and indian traders from around the indian ocean mixed with the bantu people from africa's interior? a. swahili coast b. guinea coast c. drakensberg coast d. namib coast

Given: circle a externally tangent to circle b. how many possible common tangents to circles a and b can exist? 2 3 4