What does the phase of the moon seen from earth depend on?

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

What was the land like over 500 million years ago? what was under the sea?