What is the difference between environmental science and environmentalism?

What is the compliment dna strand to the following sequence: ttgactaggcta

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

Approximately what wavelength of light is best absorbed by chlorophyll a