the correct answer. Write your answer before each number. 1. The following human activities are caused of physical weathering except A. boating and fishing C. mining ores B. building roads and tunnels D. acidic water in the river 2. What will happen to a rock when it exposed to higher temperature? It A. contracts B. evaporates. C. expands. D. sinks. 3. The formation of rust in a rock makes it soft and crumbly. It gives also a red or brown color to a rock. This happens when the iron combines with the oxygen in the presence of water. Which type of weathering does this activity belong? A. Physical weathering C. Mechanical weathering B. Chemical weathering D. None of the above 4. How does the wind cause to breakdown the rocks? It A. can lift and crack rocks into fragments when it penetrates into the joints of rocks. B. steps on the rocks and crack rocks into pieces. C. blows away the light particles of rocks and if this process continues, this will cause the layers of the rocks peeled off. D. pushes the exposed area of the rock and then dissolves and softens it. 5. It is the kind of weathering due to disintegration of rocks into smaller pieces or fragments without changing the rock's mineral composition. A. Mechanical weathering C. chemical weathering B. Erosion D. all of the above 6. The following are the agents of weathering except A. Carbonation B. hydrolysis C. oxidation D. quarrying 7. Plant serves as agents of weathering. Which of the following statement support this idea? A. branches of plants cause the rocks to break when blown by the winds. B. decaying trunks of plants cause the rocks to break. C. Falling of leaves cause rocks to break. D. Root of plants that grow in rocks and cause them to break. 8. A heavy rain was happened last night. When Ernesto woke up, he noticed that their front yard was muddy. What agent of erosion caused this situation? B. human C. water A. Animal D. wind 9. As the force and speed of the water that flows from the source become greater the soil erosion A. decreases B. increases C. stops D. never stops 10. The following agents of soil erosion are experienced here in the Philippines except C. erosion by ice A. Erosion by water D. erosion by organisms B. Erosion by wind 11. The following are the effects of soil erosion to living things. Which does not belong? A. Decrease in food supply for aquatic organisms B. Lessening of the nutrients of the topsoil_____guys i hope u gonna help mey='] ​