The North American and Pacific plates are sliding along each other at approximately 2 inches per year (although this speed can vary, especially during a strong earthquake!). If Point Reyes and the Tehachapi Mountains are now 300 miles apart, how long ago were they together? (hint: 300 miles is 19,008,000 inches)

Answer( solar wind );

Answer b is the answet

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.