Where are the lungs located in relation to the heart

Witch type of microscope is used to view very small cell components like proteins and dna?

What is one way intensive agriculture can contribute to climate change? a. tree loss to agriculture increases earth's albedo b. livestock manure absorbs greenhouse gases c. large herds of livestock release greenhouse gases d. fewer trees are available to replenish petroleum stores appex

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