Human Impact on Biodiversity

Part 1 - Human Population Growth The human population shows what type of growth? exponential logisitic What is does this type of growth say about the human population births are equal to deaths and there are no limiting factors births outweigh deaths and there are no limiting factors births are less than deaths and there are many limiting factors births are less than deaths are there are no limiting factors Which is a potential limiting factor to the human population? drinking water food disease all of these Part 2 - How Humans Impact Biodiversity Match the term to the correct definition Deforestion the number of different kinds of organisms living on Earth or in an ecosystem Keystone Species a species that plays a critical role in the community and without the species the community will decline Pollution the release of harmful substances or energy into air, soil, or water Bioaccumulation an increase in the amount of a chemical, like a pesticide, in the tissues of an organism Invasive Species an introduced species that thrives in a new environment and negatively impacts that environment Use a "T" or and "F" to indicate if the statement is true or false F F T F F T Use lowercase letters to indicate your answer to the questions below a b a a a What human activities release greenhouse gases into the atmosphere? photosynthesis respiration by plants burning fossil fuels Logging is the process by which trees are cut down so that wood can be harvested by humans. The wood that results from logging can be used to make many different products, including homes, furniture, and paper.Which of these best describes how the process of logging impacts ecosystems? Logging is usually beneficial to ecosystems because it increases available space Logging can be done in such a way that it causes no disruption to ecosystems Logging results in an overall increase in nutrient availability in ecosystems Logging is one way that humans deplete natural resources in ecosystems Acid rain is occurring in the ecosystems of the Smoky Mountains, limiting the nutrients found in the soil, making it harder for plants to grow, and contaminating the water supply.Which of the following is most likely causing the acid rain? the introduction of invasive species the burning of fossil fuels by humans the overuse of fertilizer on local farms the clearing of trees for construction Kudzu is a plant that was brought to the southern United States to reduce soil erosion of farm land. It has spread rapidly throughout this region, often smothering small plants or breaking tree branches as it grows.Which of the following characteristics of kudzu has led to it becoming invasive throughout the southern United States? Kudzu is sensitive to the herbicides used to control plant growth in this region Kudzu needs sunlight so that it can perform photosynthesis Kudzu grows in ecosystems that have a high diversity of herbivores Kudzu can spread rapidly because most native animals do not eat kudzu Deforestation results in _ trees to take in carbon dioxide, which can cause _ temperatures through a(n) _ greenhouse effect fewer; warmer; increased more; cooler; decreased fewer; cooler; decreased more; warmer; increased Fertilizer runoff from farms can get into groundwater and travel to nearby streams. Then, it can eventually end up in lakes. What is one result of excess fertilizer in a lake? decreased aquatic plant growth dirtier water in the lake cleaner water in the lake increased aquatic plant growth