In an energy pyramid, up to 10% of energy is transferred between trophic levels. Suppose the producer level has 50,000 J. Approximately how much energy is available to the next level, the primary consumer, in this energy pyramid?

5,000

Explanation:So it is the 10% law, this is an example 10,000 for the first animal, 1,000 for the second and 100 for the third. So for 50,000 it would be 5,000 for the next

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.