The flowrate per unit width in a wide channel is q =2.3 m2/s. Is the flow subcritical or supercritical if the depth is(a) 0.2 m, (b) 0.8 m, or (c) 2.5 m?
Vicariance Events Large-scale speciation events caused by geological or climatic events Orogenic Events Mountain building events can affect vicariance events. Ex: the closing of the Panamian portal between the Pacific Ocean and the Caribbean was a vicariant event that impacted ocean currents. Ch. 42 Abundance of individuals in populations is influenced by Populations population density and population size. Population abundance Influenced by: 1) Adaptations in the species’ niche 2) The quality of an organisms’ habitat Survivorship curves Type 1: most offspring produced in a generation survive into adulthood. Mortality rates are low until the old ages are reached. Ex: elephants and human beings in developed countries Type 2: Mortality rate is constant throughout the years. Ex: eggs, young eagles, humans in undeveloped countries. Basically, they all have an equal chance of dying at any time. Type 3: Most of the offspring die before maturing but