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

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

because they are eaten by the frog and the frog getseaten by the snake and the snake by the eagle

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.