What do nitrifying bacteria do?

a. remove nitrogen gas from ammonium

b. release nitrogen from fossil fuels

c. convert ammonium to nitrates

The following tracking model was created for Hurricane Katrina on August 26, 2005. Map of Gulf Coast showing the forecasted path of Hurricane Katrina on August 26, 2005. The storm's current location, as of 5 p. m.

List two alternative futures for cells when they reach their size limitations

Which of the following organisms are made up of cells that do NOT have cell walls? A) daisies B) dogwood tree C) bacteria D) butterflies

Contrast 3 types of muscle. which muscles are not under volantary control?

Which protists have cells walls and reproduce by forming spores

Why is meiosis split into meiosis one and two

Identify a chemical compound or element and explain how it acts as a water pollutant.

What are some intended and unintended consequences for the environment as a result of developments in biotechnology?

Inadequate circulation of blood throughout the body is known as:

Which factor would be least likely to contribute to the development of a new species?