In August 2010, about 500 million eggs were recalled by the government because its egg shells were contaminated with salmonella. This is an example of . a.
how toxic heavy metals can enter the environment through natural processes
b.
how persistent organic pollutants do not easily break down in the environment
c.
how chemicals can change reproductive processes in organisms
d.
how thermal pollution can cause the spread of a disease
e.
how transmission of infectious diseases can be through environmental factors

I think it's E

Explanation:

E seems to fit well. I'm taking this test right now so I'm not sure but I hope this helps. Sorry if its not :(

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.