What type of waste products may be discharged into u. s. waters?

None.

Explanation:

Disposal of waste products in waterways is done by people who, in general, ignore its negative impact on the environment. Waste products accumulates on the banks or at the bottom of rivers and other sources. When it rains, they hinder or impede the flow of water, causing floods and eventually tragedies. In addition, they can be ingested by animals.

When they arrive at sea, the waste products is carried to every corner of the planet, interfering negatively in marine life. This also causes them to accumulate on different surfaces, such as corals, ice, islands or the bottom of the oceans. Fish, turtles, birds and all marine fauna can be seriously hit by the waste and contaminated by toxic substances.

For this reason, a ban on the unloading of any type of waste products in US waters has been established. That is, no type of waste products can be discharged into US waters.

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

i took a test for bio that had this question and these were the correct answers, not sure if this is any now lol

the nervous system and the muscular system work together.  

sweat reaches the surface of the skin and evaporates into the air.

muscles underneath the skin relax, causing hair on the skin to lay flat.