Low tide happens once a day is the trough of a tidal wave happens 2 hours after high tide only happens during the spring

Which of these organisms have the greatest amount of cell specialized

What if the yeast were extremely active and produced more than 100ml gas. would you know? why/why not

Ascientist is designing an investigation to study the impact of invasive bird populations on local, native bird populations at backyard bird feeders. what population is most likely to be a control group for the investigation? amount of food number of bird feeders invasive bird populations local backyard birdfeeders without food