Where is the youngest material in the sea floor found a along a ridge
b along the edge of a continent
c in the dee ocean troughs
d wherever an earthquake has occurred

How does pregnancy begin? a) a placenta forms in the uterus b) a sperm reaches an egg in the fallopian tubec) the blastocyst differentiates into two cell types d) contractions begin in the uterine wallapex

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

In what part of the body does the most muscle activity happen?