EARTHSS 1 Final: ESS 1 Final practise questions Answers
Document Summary
Some practice questions for ess 1 final answers: biogeochemical cycle of phosphorus. Below is a figure showing a simplified phosphorus cycle. 45000: farming practices over the last 50 years have resulted in much more soil erosion so increased rates of runoff of soils to the ocean. If rates of runoff increase then the amount of soil (and phosphorus on land) will decrease which may limit our ability to grow enough food to feed our increasing population. They produce organic molecules using photosynthesis: what is the trophic level of polar cod in the food web above? (note depending on the pathway you choose the number might be a bit different. ) By consuming other organisms and carrying out respiration where organic molecules are broken down to produce co2, water and energy: polar bears use sea ice in the arctic to hunt from in the summer.
