A 15th century farmer finds a rock that looks exactly like a clamshell. What did he likely conclude about how the fossil got there?

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

When new rock is added to an oceanic ridge, the magnetized strips on either side of the ridge are evidence of sea-floor spreading. this is because the rocks on the two sides of the ridge o are equal in width and in polarity are polar opposites oare magnetized vary in width but are equal in polarity

What is the period of cell life when it is conducting