Bill the explorer was hiking through the brazilian rainforest when he came upon a strange, organism which had yet to be classified. it was small, with a mass of only 10 grams. bill noticed the organism was coverd in feathers. after further investigation, bill discoverd that although it did not fly, it had hollow bones. how should bill best classify this organism. a. amphibian b. bird c. mammal d. reptile

Which properties describe all matter?

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

Me with these questions if you’re it sure don’t answer