An (environment/ecosystem) is all of an area’s plants and animals together with the nonliving parts of their area.

In 1933 the 21st amendment was added to the u.s. constitution, allowing for the manfacture, transportation, and sale of alacoholic beverages in the united states. why was this amendment needed?

¿cual es mas alta en baja california,la migracion o la inmigracion?

Find the coordinates of a if b(-9,-10) is the midpoint of ac and c has the coordinates of (-1,9)