(Help Please;Biology) The sustainability of an ecosystem is its ability to survive changes. Which model shows the relationship between an ecosystem’s biodiversity and its sustainability?

A) Increasing Biodiversity; Increasing Sustainability/ Both arrows pointing to the right

B) Increasing Biodiversity; Increasing Sustainability/ Biodiversity pointing to the right, Sustainability to the left

C) Increasing Biodiversity; Unchanging Sustainability / Biodiversity pointing to the right, Sustainability Points Nowhere

D) Increasing Biodiversity; Increasing Sustainability/ Biodiversity pointing to the left, Sustainability to the right

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.

I’m stuck on this question cuz i’m stupid sksksksk

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.