If wood ducks can feed at more than one trophic level, then what can feed at more than one trophic level? Answer choices: - insects - mammals - people - animals - rabbit - chickens - wood ducks - humans
wood ducks

If pupils get smaller when reacting to strong stimuli, then what do pupils get when reacting to strong stimuli? Answer choices: - smaller - Energy. - grow - Energy - It expands - expelled - properties - nerves
smaller

If abreathing mask is used for keeping harmful particles from entering the lungs, then what does a breathing mask keep harmful particles from entering? Answer choices: - skin - tissue - stomach - h2o - H20 - air - lungs - gas masks
lungs

If blood flow is regulated by breathing, then what is regulated by breathing? Answer choices: - thirst - air pressure - blood flow - body water - Energy - Chemical energy - Decibels - kinetic energy
blood flow