In your notebook draw an expanded model of the circulatory system Show the vessels out of the heart down to a capillary bed
At the capillary bed, show the exchange of gases between blood and tissues
Show the blood returning to the heart and moving through the chambers to the lungs.
At the lungs, show the exchange of gases between the blood and the air.
Show the blood returning to the heart and moving through it to start the cycle
Use the terms: oxygen, carbon dioxide, artery, arterioles, capillaries, venules, veins, atria (left and right), ventricles
(right and left), pulmonary vein, pulmonary artery, and aorta.
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Acladogram is a branching diagram that represents suggested evolutionary relationships among organisms based on the presence of unique traits. a scientist discovers a new organism that lacks limbs and does not have a true backbone. the organism lays eggs to produce offspring and has a cartilage-like rod known as a notochord running along its dorsal surface. on the cladogram below, select the species to which the newly discovered organism is most closely related.

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

What do nitrifying bacteria convert