A: Flowering of onions can be caused by several things, usually temperature fluctuation. An onion is classed as a biennial which means it usually takes two years to go from seed to seed. However, this condition is triggered by temperatures.
Under what conditions will the front of a glacier remain stationary? Glacial fronts remain stationary when melting and snow accumulation are equal. Glacial fronts remain stationary when friction exceeds gravity forces. Glacial fronts remain stationary when melting and snow accumulation are unequal. Glacial fronts remain stationary when gravity forces exceed friction.
This marks the beginning of the zone of melting. As the glacier moves downhill, it reaches a point at which the snow begins to melt. As the fresh snow on the surface melts, the main body of glacial ice is exposed. Soon meltwater streams appear on the surface and the glacier begins to feel the heat of summer.