A majority of the pollution entering the Chesapeake Bay comes from many sources of agricultural runoff, and lawn fertilizers. Roughly 40 percent is nitrogen, 50 percent is phosphorus, and 10 percent is from other nutrients. This type of pollution is called
O point source pollution
industrial waste
O heavy metals
Ononpoint source pollution

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

the answer is z.

the human body has five levels of organization. level 1: cells. cells are the basic units of life and form the first level of organization. cells in the human body have specific functions. examples include nerve cells, blood cells, liver cells, and so on.