Factor this trinomial. x2 - 9x+ 20
O A. (x-2)(x - 10)
OB. (x-2)(x + 10)
O C. (x – 4)(x + 5)
O D. (x-4)(x-5)

20 points and brainlist 1. london has suffered from terrible air pollution for at least seven centuries. why is the city so prone to its famous “london fog? ” what did london do to get rid of its air pollution? 2. why does air pollution cause problems in developing nations more than in developed ones?

Anton created a chart listing different types of materials. which best complete the chart?

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone