Answer:
X=17.4444..&Y= - 1.2222..
External skeleton is the correct answer. Hope this helps out !
The average height of the oceans surface between high and low tides is called the sea level. It is important to know this measurement because with this it is possible that we can calculate the height of anything on the land. Also, we can <span> calculate the height of anything on the land. Also, we can be able to determine whether the oceans are falling or rising through time.
So the answer is </span><span>Sea level </span>
They allow the heart to pump more blood by decreasing the ESV.
