Identify the correct sequence of blood flow for the systemic circuit.
right ventricle, arteries, arterioles, capillaries, venules, veins
arteries, arterioles, capillaries, venules, veins, left atrium
left ventricle, arteries, arterioles, capillaries, venules, veins
left atrium, arteries, arterioles, venules, capillaries, veins

What role do bacteria play in the carbon cycle

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis