What do bone marrow and the epidermis have in common

Plz will mark! the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

The arrows indicate the direction of wind flow. which place experiences monsoons?

According to these anatomical structures which two animals are probably most closely related