(noun). The action of mentioning or alluding to something. (adj). Not even or balanced in shape or arrangement. (noun). An act of moving. (noun). a very small piece of something (verb). to move or make something move from side to side very quickly and with small movements (verb). make a sudden short sharp movement move (verb). khởi xướng - Cause (a process or action) to begin. chain reaction /ʧeɪn riˈækʃən/ (noun). a chemical reaction or other process in which the products themselves promote or spread the reaction (adj). Achieving a significant amount or result (noun). A place with sand, hot weather and no vegetation (noun). land that is used for farming (adj). not good enough for plants to grow on it (adj). connected with the practical use of machinery, methods, etc. in science and industry (verb). Make determined efforts to deal with an issue desertification /dɪˌzɜːtɪfɪˈkeɪʃən/ (noun). The process fertile land becomes desert (noun). An artificial body placed in orbit round the earth or moon or another planet (verb). Make practical and effective use of. investigate /ɪnˈvɛstəˌgeɪt/ (verb). Carry out research or study into a problem (noun). Farm animals regarded as an asset (verb). have an influence on (noun). the movement of large numbers of people, birds or animals from one place to another (verb). enter (a country or region) so as to subjugate or occupy it (noun). A person who has been forced to leave their country in order to escape war, persecution, or natural disaster. (adj). Exposed to the possibility of being attacked or harmed, either physically or emotionally (noun). a biological community of interacting organisms and their physical environment cultivation /ˌkʌltɪˈveɪʃən/ (noun). the preparation and use of land for growing plants or crops (noun). The process of establishing a settlement or settlements. (noun). a member of a community that moves with its animals from place to place (noun). a number of birds of one kind feeding, resting, or traveling together (noun). a group of animals of the same type that live and feed together (noun). Land covered with grass and other low plants (noun). A fertile spot in a desert, where water is found. (noun). A teacher or scholar in a university or other institute of higher education. (noun). The actual application or use of an idea, belief, or method (noun). a cultivated plant grew to be eaten as grain, fruit or vegetable progressively /prɑˈgrɛsɪvli/ (adv). In a forward-looking, innovative manner. (adj). Free from moisture or liquid; not wet or moist. (noun). part of a country or the world having definable characteristics (noun). A prolonged period of abnormally low rainfall vegetation /ˌvɛʤəˈteɪʃən/ (noun). Plants considered collectively (noun). an area of land, especially a large one (adj). entirely lacking or free from susceptible /səˈsɛptəbəl/ (adj). easily influenced by feelings and emotions (noun). The process of eroding or being eroded by wind, water, or other natural agents. (verb). Find (something) out for certain; make sure of. (adj). easy to perceive or understand (noun). A line separating two countries, administrative divisions, or other areas. (noun). everything you can see when you look across a large area of land (noun). a distinctive attribute or aspect of something. (adj). Very great in amount, scale, or intensity. (noun). the attention that is given to somebody/something by newspapers, television, etc. (adj). (of something bad or undesirable) very great; intense. (noun). the fall of rain. misunderstanding /ˌmɪsəndərˈstændɪŋ/ (noun). A failure to understand something correctly. (noun). A state or situation in which something needed cannot be obtained i precipitation /prɪˌsɪpɪˈteɪʃən/ (noun). rain, snow, etc. that falls; the amount of this that falls (verb). make one's living by growing crops or keeping livestock (noun). the upper layer of the earth in which plants grow accelerate /ækˈsɛləˌreɪt/ (verb). Increase in rate, amount, or extent >< decelerate, stop, delay (noun). Wood burned as fuel (noun). Material such as coal, gas, or oil that is burned to produce heat or power (noun). A celestial body moving (noun). conditions in which the air is very warm and damp (noun). a fine powder that consists of very small pieces of sand, earth, etc. (noun). A fact or situation that is observed to exist or happen, (noun). A violent blowing apart of something caused by a bomb impoverished /ɪmˈpɑvrɪʃt/ (adj). (of a person or area) made poor. destructive /dɪˈstrʌktɪv/ (adj). causing great and irreparable harm or damage thunderstorm /ˈθʌndərˌstɔrm/ (noun). a storm with thunder and lightning and usually very heavy rain (noun). The top layer of soil. (verb). Compel observance of or compliance with a law (noun). The possibility or likelihood of some future event occurring. (noun). land as opposed to the sea or another body of water. (verb). Make (suffering, deficiency, or a problem) less severe. (noun). a glass building protecting plants from cold weather agriculture /ˈægrɪˌkʌlʧər/ (noun). The science or practice of farming, including cultivation of the soil (noun). a thing that is composed of two or more separate elements; a mixture microalgae /maɪkrəʊˈældʒi/ (noun). microscopic algae, typically found in freshwater and marine systems, living in both the water column and sediment (noun). A means of securing the necessities of life.