According to an energy pyramid model, which trophic level is expected to have the largest biomass in land ecosystems?

Apopulation of black bears depends on salmon from a stream for food. if a drought causes the stream to run dry one year, how will this likely impact the black bear population?

Which of the following is a true statement? question 8 options: populations can't evolve, only individual organisms. individuals have adaptations that can change over time. individuals have traits that may or may not make them successful at reproduction. individuals evolve to have adaptations.

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?