Bell Ringer List 3 examples of phenotype I can describe non-living influences on changes in the environment. Genetics What is genetics? Phenotype— Who can tell me ……………. Genotype– Who can tell me………. Environmental Non-living influences limit whether a species can survive in a habitat Examples: Pollution Fire Height of a mountain Volcanic eruption Periodic flooding of rivers What changes happen as you travel up the mountain? Visualize…. Brain Storm: Take 2 min. with you neighbor Think about what changes as you travel up the mountain. Plant & Animal differences… The environment gradually changes as you go up the mountain. Temperature decreases Wind usually increases At high elevation, trees can be short and stubby Above certain elevations (trees don’t grow at all) Animals are found also vary at different elevation Nepal Nepal is one of the richest countries in the world in terms of biodiversity due to its unique geographical position and altitude variation. The elevation of the country ranges from 60 meters above sea level to the highest point on earth, Mt. Everest at 8,848 meters, all within a distance of 150 kilometers resulting in climatic conditions from sub-tropical to arctic. This wild variation fosters an incredible variety of ecosystems, the greatest mountain range on earth, thick tropical jungles teeming with a wealth of wildlife, thundering rivers, forested hills and frozen valleys. Within this spectacular geography is also one of the richest cultural landscapes anywhere. The country is a potpourri of ethnic groups and sub-groups who speak over 93 languages and dialects. Nepal offers an astonishing diversity of sightseeing attractions and adventure opportunities found nowhere else on earth. And you can join in the numerous annual festivals that are celebrated throughout the year in traditional style highlighting enduring customs and beliefs Species and the Environment Natural Selection Mutation Selective breeding Direction of evolution Extinction of a species Natural Selection According to Darwin and Wallace changes happen from generation to generation that result in adaptations to the environment. Evolution—the change in genetics of a species over time. Natural selection—the proposed organisms that are better adapted to an environment survive and reproduce at a greater rate than others. Fittest survive Mutation– is the process in which DNA results in new alleles. Some of these produce– Mutations for improved adaptations and reproduction. Homework • List some nonliving factors in the environment that can cause change in species over several generations. • Compare selective breeding and natural breeding. • How are evolution and extinction related? • What are some (3) changes made by humans in the area where you live that might affect some of the species in Harlan. Reading pages 38-56 Reading checks pages 39,41,44,46,50, WRITE the question and the complete answer.