5. Which of these types of environments experiences
the LEAST change in the total number and type of
species over time?
A. An ecosystem with only pioneer species
B. An ecosystem that is in primary succession
C. An ecosystem that is in secondary succession
D. An ecosystem with a climax community

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What does gradualism and punctuated equilibrium have in common

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

How is the carbon cycle related to global warming ?