3. After learning about chemical reactions, Olivia investigated different kinds of chemical changes using substances she found in her kitchen
so she could see these changes. Which of the following can occur when
a chemical reaction takes place? Choose the three statements that
apply.

Could someone me with number one you

In which case would a scientist choose to use a dissecting microscope rather than a compound microscope

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.