Biochemical oxygen demand is . Group of answer choices measured in a test that passes the sample through a filter and then weighs it unaffected by secondary sewage treatment all of the answers are correct a measure of the amount of oxygen that may be used up when a wastewater enters a stream usually about 5% in untreated sewage

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

Why do we perceive objects as retaining their brightness under different lighting levels?

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