Poly-chlorinated biphenyls (PCBs) are considered persistent chemicals because they do not biodegrade after being released into the environment.

Answer the following statement true (T) or false (F)


True

Chemicals are considered persistent if they are resistant to being broken down by biological or chemical means once released into the environment.

Environmental & Atmospheric Sciences

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Generally, the greater the speed, the greater the ____

a. wavelength b. wave period c. wave trough d. wave type e. water depth

Environmental & Atmospheric Sciences

Describe the various methods used to desalinate seawater

What will be an ideal response?

Environmental & Atmospheric Sciences

Hunters and gathers did leave their mark on the natural environment as stated by the Pleistocene overkill hypothesis

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

In which of the following molecules does the carbon atom have a nearly tetrahedral distribution of electron density?

A) C2H2 B) C2H4 C) C2H6 D) none of these

Environmental & Atmospheric Sciences