Why do scientists think mass extinctions occurred?

The reaction above takes place in a closed system. What is true about the mass of the nitrogen atoms in this reaction? A. The mass of the nitrogen atoms decreases in the reactants and increases in the products. B.

this is for atoms of elements combine by sharing electrons or by the complete transfer of electrons from one atom to another. What is the term?

A monoglceride is composed of

What are the prefix, root and suffix for the word Genitourinary?

4. Does a prokaryotic cell have a cell wall?

Select the correct statement (s) about the transfer of food energy up the trophic levels from its source in autotrophs. Select all that apply. An organism feeds at only one trophic level.

Describe two ways in which a polyploid is formed

What is genetic modified food

Trying to demonstrate a fact by testing to see if the same result occurs repeatedly is___. A) concluding. B) experimentation. C) boring. D) theorizing

Rain, hail, sleet and snow are all examples of