Long Term & Short term environmental changes 8.11 AB

Understand short-term vs. long-term environmental changes and their impact on ecosystems.

8.11 A - Competition for Biotic Abiotic Factors Classify the following factors of an ecosystem as either biotic or abiotic by placing an X in the appropriate box Factors of an Ecosystem Biotic Abiotic Sunlight X Water X Air X Organisms X Decaying Tree X Rock X Bacteria X Water X Frog X Fallen Leaf X Temperature X Soil X Climate X Phytoplankton X Minerals X Use the Food Web Above.How would a reduction in the snail population effect this ecosystem? It would cause a decreased competition between spiders and owls It would cause decreased competition between spiders and wood mice It would cause increased competition between grasshoppers and beetles It would cause increased competition between wood mice and shrews Organisms in an ecosystem must compete for resources such as water, sunlight and food. Because of competition, resources may be limited or depleted in an ecosystem. Abiotic factors include water, light and quality of the soil. Population density can lead to resource depletion. 8.11B - Environmental Changes Use the following passage to answer the question that follows:Texas is home to nearly 2 million fera (wild) hogs. These hogs are highly adaptable and and found in nearly every part of Texas. Some feral hogs are descendants of European wild hogs, which were originally brought to North America for hunting. Other feral hogs escaped from farms and ranches. OVer many decades, the two types crossbred.Wild hogs are omnivores and feed on nuts, berries, fruid, and the young of some animals. Hogs are able to find food more efficiently than other wild animals because of their highly developed sense of smell. Female hogs generally have two litters of one to seven young per year. One explanation for the increasing wild hog population is - they are able to escape hunters other wildlife populations have been reduced food supplies have increased across the state they are able to survive in a variety of environments There are three species of birds on an island. Bird A has a pointed bill for eating insects. Bird B has a heavy bill for eating seeds. Bird C has a sharp bill for eating seeds and insects. If the insect populations suddenly disappeared on season, which bird would probably be the least affected that season? Bird A Bird B Bird C Bird B Bird C Was this a short term or long term change to the environment? short term long term Long-term environmental changes occur slowly over time, affect organisms over many generations, and in many cases the organisms have time to adapt. Short-term environmental changes occur quickly, affect organisms immediately, and the organisms do not have time to adapt and are forced to move or they will die. Identify each of the following changes that have affected organisms and traits in future populations as either a short-term environmental change or long-term environmental change. Short- Term An earthquake caused landslides and shifts in ground level, which changed the course of rivers or flooded large areas. Earthquakes that occur in ocean areas can cause underwater landslides that create tsunamis. The large waves can destroy coastal systems. Extended droughts caused by the El Nino Nina global weather cycles may cause individual species to decrease with the changing conditions. Nitrogen fertilizer runoff into the ocean causes algae blooms, which kills fish and creates dead zones near large river deltas Long-Term Tectonic plate movement has caused large changes in climate across the Earth, leading to the extinction or growth of many species. Changes in the Earth's tilt angle and direction are thought to control the natural climate changes that occur on our planet. Species adapt to these changes by changing camouflage colors, thickness of fur, habitat range, or hunting and migration behavior Four students categorized several different environmental changes as short-term or long-term changes.Which table correctly categorizes short and long term changes? Ecological Succession Quizizz!!