C. <span>eukaryotic cells contain organelles that are enclosed in membranes.</span>
the bird is a barn swallow.
"If I heard a herd of elephants talking to one another and being together regularly, I would capture their noises. Then I would play them into the ground at a separate spot far away from the herd of elephants. I would observe the elephants' reactions while I recorded them by playing various recordings through the ground (ex. if they freeze in place when they feel the vibrations, how they react afterwards, etc.). To compare and analyze the elephants' behavior, I would record this information and repeat the procedure several times."
Behavior- The reactions of a complete live organism to internal and/or external stimuli are internally coordinated behaviors.
To know more about the Behavior, click on the below link,
brainly.com/question/28272666
#SPJ4