15. In the Himalaya, rock layers 3 points often show fold structures, which have formed by buckling in response to * Layer-parallel shear forces O Cross-layer compressive forces Layer-parallel compressive forces O Cross-layer gravity force 16. What causes Red Tides in 3 points Ocean? * OKarenia sp. OProchlorococcus sp. OCalanus sp. OSynechococcus sp.