The graph shows three models of world population growth.

according to the un projections, at what point might earth first see a catastrophic drop in population?

a. around 2020
b. around 3000
c. around 2060
d. the graph does not show a drop in population.

Rue or false siblings look simila rbecause they each have some traits of their parents.

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.

One gene can influence trait(s). one trait can be determined by gene(s).