Which of the following is not a property of persistent organic pollutants (POPs)? a. They have carbon-based molecular structures. b. They do not break down easily in the environment. c. They are insoluble in fat. d. They are polluting and toxic.

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

The body of water found at number 4 on the map above is the

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides