1. 7-1-6 Review Name__________________________ Pd_____ Describe what is happening in this compost pile. ______________________ ______________________ What is actually breaking down the material in the compost pile? ______________________ Bush  Mouse  Snake Using the food chain- Name a predator/ prey relationship ______________________________________ If the Mouse population increases, what will happen to the snake?____________________ If the snakes increased, what would happen to the mouse? ____________________________ sodium hydrogen carbon oxygen What is an organic compound? _______________________ What element must be present in order to be organic? ____ What is the connection between organic compounds and decomposers? ____________________________________ Use the key to the left to draw an organic compound. Include at least 3 elements: What do the arrows in the food web represent?______________________ Describes what is happening during decomposition and decay. What is involved in this process? _______________________________ _______________________________ Radiant energy What is the equation to the left describing? _____________________________ What uses this process? ____________________________________________ Where does the radiant energy come from? ____________________________ Why is the radiant energy important? __________________________________ What type of relationship exists between the rabbit and the fox? __________________________________ How can you tell? __________________________________ What happens to the rabbit population as the fox population decreases? __________________________________ Draw a line and label each part of the model with the correct term. Population Organism Ecosystem Community Biosphere Which term includes that largest number of organisms? ____________ The Smallest? ___________________ What organisms contain the most energy? _____ The least?________ Where do the producers receive energy from? ________ Which organisms provide energy for the primary consumers? ______________ for the secondary consumers? ________________ for the tertiary consumers? ________________ Draw a diagram of the plant undergoing photosynthesis:

2. What role do the bacteria play in the food web?____________________________________ Mice receive energy from _____________ Grasshoppers receive energy from ___________ Quail provide energy for the ____________ Grass provides energy for the _______________ How would the grasshoppers be affected if the opossum population increased? __________________________________________________________________________ How would the mice be affected if the weasel population decreased? __________________________________________________________________________ What organism has the biggest impact on all of the other organisms? ___________________ Complete the chart using the frog’s microhabitat: Biotic Factors: ____________ ____________ ____________ ____________ ____________ Abiotic Factors: ____________ ____________ ____________ ____________ ____________ List factors that are essential to the frog’s habitat: __________________________ __________________________ __________________________ Predict what would happen if grasses were removed from this habitat: __________________________ __________________________ What would happen if the grasses increased? __________________________ __________________________ __________________________ 1aLeaves are needlelikego to 2 1bLeaves have flat bladesgo to 4 2aNeedles attached singlygo to 3 2bNeedles attached in bunchesWhite Pine 3aNeedles on two sides of the stem Balsam Fir 3bNeedles on all sides of the stem Red Spruce 4aLeaves are compoundgo to 5 4bLeaves are simpleSilver Maple 5a5-7 leaflets White Ash 5b9 leaflets on each sectionCoffee Tree Use the dichotomous key to identify leaves 1 and 2 12 ________ _________ Match each Texas biome to it’s correct illustration. a.West Texas Desert b. Texas prairie c. Gulf of Mexico What organisms will inhabit each ecosystem? _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ _______________________________ Label producers, primary consumers, secondary consumers, and decomposers 1 ___ 2 ____ 3 ___