Human–computer interaction

D. ocean currents D. changing water temperature profiles A. descending air masses tend to be dry E. tilt of the earth?s axis D. estuaries usually contain no or few producers C. denitrifying bacteria C. not only avg climate, also pattern of climatic variations B. many kinds of plants and plants comm. Have adapted to frequent fires B. extreme variation in precipitation C. savannas E. taiga E. a male robin attacks ball bcuz confused with male steal territory E. 20 individuals lost C. parental care of offspring D. there might be fewer owls C. III (zpg) A. environmental degration B. convergent evolution E. parasite C. keystone E. severe drought D. fairly recent volcanic island B. parasitism D. secondary succession; facilitation D. tropical rain forest B. loss of ecosystem services

Four contributions Charles Darwin contributed to the field of evolutionary biology were: non-constancy of species, branching evolution, occurrence of gradual change in species, and natural selection. Each of his contribution became the foundation of evolutionary biology and can be seen in the wild very commonly. Non-constancy can be observed though variation in the offspring. For example, different sized beaks in finches display variation in the species and therefore, non-constancy. This can cause change in the gene pool of a species over time. Many evidence of branching evolution can be seen in the anatomy of different species like homologies and vestigial structures. In whales, the hip bones are similar to humans? which indicates the common ancestry between the two species.