Julianna blows air into a balloon to inflate it. what can be known about the atoms of the air?
they are close together.
they are moving constantly at high speeds.
they vibrate in place.
they are held together by strong attractions.

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere, b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify, d)anaerobic bacteria kept thriving with more oxygen

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above