If there are more secondary consumers than primary consumers present in an ecosystem , what can be assumed about that ecosystem ? A. There is an imbalance in the ecosystem.
B. Everything is normal within the ecosystem.
C. The pyramids of numbers , energy , and biomass are in balance .

What is one benefit of a non renewable resource, such as natural gas? a. generates large amounts of electricity b. less expensive c. produces pollution d. will run out eventually

In the family tree below, people with the recessive trait of attached earlobes are shaded gray.

What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.