The frequency and energy of a wave that has a wavelength of 4.7 x 10-7 m.

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

Coral have a symbiotic relationship with what in order to eat?

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.