6. What is the process in which soil is carried away or being transferred from one place to A. sediments B. erosion C. pollution D. diffusion 7. The sap of some trees is called what? A. rayon B. rubber C. sap D. turpentine 8. What do trees give off? A. carbon dioxide B. helium C. oxygen D. magnesium 9. What do you call extracted thing from wood pulp of cane plant? A sap B. sugar c.juice D. rayon 10. What does man gives off? A. carbon dioxide B. oxygen C. calcium D. sodium 11. What is the most important factor which affects the growth of trees? A fertilizers B. climate D. sunlight D. soil 12. How are you going to choose the best kind of seeds? A. by the single sizes and color C. through shapes and designs B. through healthy condition and mature with in cuts D. by appropriate age 13. What is the best way of caring the plants? A. the grass and weeds become many B. without applying fertilizers C. keep them dry D. water them during sunrise or after sunset to keep evaporation of water from the soil inting?​