Explain one cause for low agricultural productivity in Africa and a possible solution.

temperatures get warmer — and heatwaves are more common. nothing says summer like warm weather. this rise in temperatures is caused by the tilt of the earth's axis. our planet doesn't sit perfectly straight as it spins — it has a slight lean of approximately 23.5 degrees with respect to the sun, called the axial tilt.

explanation:

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)