During the nitrogen cycle? ammonia is turned into sugar?
atmospheric nitrogen is converted to fixed nitrogen?
nitrogen is converted to oxygen and sugar?
oxygen and sugar are converted to nitrogen?

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

What makes a dominant allele different from a recessive allele

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer