As hominids evolved, they created increasingly sophisticated tools. based on this information, which of
the following is the best inference that can be made? (1 point)
o. as their cognitive abilities increased, the size of their brains also increased.
in order to communicate how to make the tools, they must have been capable of language.
developing tools facilitated the transition to walking upright.
using tools enabled them to obtain food, so their weight-to-height ratio also increased.

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

As a result of these processes the single celled organism accomplishes

Which of th following is needed for cellular respiration to occur