Ventilation is another name for what process? respiration
circulation
breathing
digestion

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes