[Solved] Under Australia's federal system of government: i.There are two levels of government: the Federal government and the various State governments. ii.Power to govern is shared between the Federal and the State governments. iii.The two levels of government are not subordinate to each other, but are 'partners'. A)i, ii. B)ii, iii. C)i, iii. D)i, ii, iii. Arterial changes: Modifications or alterations in the arteries, often related to aging, disease processes, or lifestyle factors, affecting blood flow and cardiovascular health. Sinoatrial Node: A group of cells in the right atrium of the heart that initiates the electrical impulses determining the heart rate, often called the heart's natural pacemaker. Atherosclerotic Changes: Alterations in blood vessels characterized by the accumulation of fatty deposits along their inner walls. Internal Bleeding: Bleeding within the body that can result from injury or illness, potentially leading to serious health complications without immediate treatment.