Which organisms utilize a one-way air flow through their lungs to maximize air flow efficiency and oxygen consumption?

a. fish
b. mammals
c. amphibians
d. birds

Overtime the pond slowly becomes more acidic due to the release of chemicals from a nearby factory. which of the organisms would most likely survive the change to their environment?

Drag each label to the correct location on the chart. match the function to the type of tissue

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.