General Science Questions

Speakers can establish credibility by 

What is the process of waste water treatment is commonly known?

__________ is the interaction in which one species benefits and the other is neither harmed nor benefited.

Precipitation in the form of a mixture of rain and snow is called

In terms of size, Neptune ranks no. ___ in our Solar System.

In the nature versus nurture debate sociologists claim that

Haustoria or sucking roots are found in which of the following?

The salt concentration (measured as salinity in parts per thousand), is less than ______ % in inland waters.