what is the primary geological cause for the western coastlines of North and South America having increased volcanic and earthquake activity?​

Mendel made crosses between pure-breeding y’all pea plants with purple flowers and pure-breeding short pea plants with white flowers. the alleles for a y’all height and purple flowers were dominant. this cross is written a. ttpp x ttpp b. ttpp x ttpp c. ttpp x ttpp d. ttpp x ttpp