The correct answer is that mammals use a closed, double loop , four chambered heart as a circulatory system of the body.
The circulatory system of mammals is closed system that consists of four chambers, two articles and two ventricles. The deoxygenated blood comes into the heart from one loop and the oxygenated blood from other loop from the heart is circulated to the whole body. This is called as double circulation.
The expirement is saying show the circle of water
1.the water mocules move apart so it is a gas
2. when the water mocules build up in the cloud and the water relese
3. the rain freezes then meltes and starts all over to 1
The correct answer is (c) the moon' gravity
The moon's gravity causes oceans to bulge. The moon's gravitational power is responsible for the rising and falling tides.The moon affects the ocean on the sides of the planet facing and facing away from it which causes oceans to bulge away from the earth. On one side ocean bulges away from the earth as planet is being pulled towards the moon and on the other side the ocean bulges towards the moon. Bulges facing towards the moon is high tides and bulges not facing towards moon is low tides.
