Question 14 Which of the following is not part of the biotic levels of
classification?
A.) Kingdom
B.) Habitat
C.) Domain
D.) Species

Question 19
If a primary consumer level has grams of biomass, how many grams does the producers level have.?
A.) 600
B.) 60
C.) 6
D.) 60,000

Question 20
If there are 2 organisms at the tertiary consumer level of the ecological pyramid, how many organisms would be found at the primary consumer level.?
A.) 20
B.) 2000
C.) 20,000
D.) 200

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?