Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Name: Summary sheet: Investigating an ecosystem Give definitions and examples for the following terms: Habitat ___________________________________________________ Community ________________________________________________ Ecosystem _________________________________________________ Population _________________________________________________ Sampling (fill in the following table) Technique Example of Drawing of technique used to organism that in use sample can be organism sampled. Quadrat Pitfall trap Possible source of error Way to reduce error - - - - - - - - - - Abiotic factors Abiotic factors are non living things which can affect living things in an ecosystem List examples of abiotic factors - 1 Measuring abiotic factors (fill in the table) Meter used Light meter Moisture meter Sources of error - How to reduce errors - - - - - - - Abiotic factors can influence the distribution of organisms. What effect does light intensity have of daisy numbers and why? Effect____________________________________________________ Why _____________________________________________________ __________________________ How It Works Give definitions and examples for the following terms: Producer__________________________________________________ Consumer _________________________________________________ Food chain ________________________________________________ Draw an example of a food chain What do the arrows in a food chain/web show? ________________________ 2 Explain what would happen if the greater spotted woodpecker was removed. ____________________________ ____________________________ ____________________________ ____________________________ ____________________________ ____________________________ ____________________________ ___________________________________________________________ ___________________________________________________________ Energy is lost from every level of a food chain make a list of the ways energy can be lost: A pyramid of numbers shows the number of organisms at each level of a food chain. Draw a pyramid of the following: Algae -> Tadpole -> fish (100) (30) (1) What does a pyramid of biomass show? ________________________________ ______________________________________________________________ 3 The growth rate of a population is dependant of what two factors? Describe and explain what is happening in terms of birth and death rates at the different various points on the graph. Description: Description: Explanation: Description: Explanation: Explanation: Number of organisms Description: Explanation: Three factors which can limit a population are: Competition Competition occurs both in the plant and animal kingdom when organisms need the same resource. Make a list of resources plants compete for and a list of resources animals compete for Plants Animals 4 Describe the effects of competition in plants and animals Plants: _______________________________________________________ _____________________________________________________________ Animals: ______________________________________________________ _____________________________________________________________ Nutrient Cycles Why are they important? ____________________________________________ _______________________________________________________________ Draw out the nitrogen cycle Control and Management Pollution affects air, fresh water, sea and land Write about the negative effects of using fossil fuel and nuclear power. Fossil fuel ______________________________________________________ _______________________________________________________________ _______________________________________________________________ Nuclear power ____________________________________________________ _______________________________________________________________ _______________________________________________________________ 5 Fill in the table about the three main sources of pollution Source of Example of pollutant pollution Give an example of how pollution can be controlled. _______________________ River pollution Describe what happens at each stage in a river when organic waste e.g. sewage is released. Stage 1: Sewage released Stage 2: Level of organic waste is________ Number of bacteria______________ Reason for the number of bacteria__________________________________ Level of oxygen_____________________________________ Name of an indicator organism present______________________________ Stage 3: Level of organic waste is________ Number of bacteria______________ Reason for the number of bacteria__________________________________ Level of oxygen_____________________________________ Name of an indicator organism present______________________________ Stage four: Level of organic waste is low Number of bacteria is low Reason for low bacteria numbers is that their food source has gone. Level of oxygen is high Organisms present ____________________________ 6 What is an indicator species and give an example of one Definition_____________________________________________________ _____________________________________________________________ Example: ______________________________________________________ Fill in the table with two examples of poor management of natural resources and possible improvements Example of poor management Effects of poor management Possible improvements How do farmers control the components of the ecosystem in their fields? _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ Extra Notes on biosphere/ points to remember. 7