Lichens are symbiotic associations of fungi and what other organism(s)?

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

Works together in the synthesis, modification, packaging, and transport of lipids and proteins

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