6. Interpretations of x-ray photographs of DNA were used to describe the shape and dimensions of the molecule. An analysis of this and other available data led to a structural model for
the
x A. DNA double helix
B. ribose in DNA
C. amino acid groups
D. base pairing

the answer is c) abandoned properties that are contaminated with hazardous materials.

meiosis is the correct answer

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

c. establishing proper sleep hygiene