Consider the subspace U of R4 spanned by the vectors: v_{1} = (1, 1, 1, 1); v_{2} = (1, 1, 2, 4); v_{3} = (1, 2, - 4, - 3) Find an orthogonal basis of U.​

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.

Water flows along the east coast and across the western tropical pacific towards south america, while they both are directed towards that way,  el niño does not directly affect the southern flow of water along the coast. 

Answer herbicide-resistant soybeans;