alternative (adj) /ɔːl't3ːnətɪv/ = offering a choice between two or more things

bounce off (v) /baʊns ɒf/  

= if light or sound bounces off a surface, it hits it and then moves away from it again

coin (v) /koɪn/  = to invent a new word or expression, or to use one in a particular way for the first time

economy (n) /ɪ'kɒnəmɪ/  = the system of trade and industry by which the wealth of a country or region is made and used

exploit (v) /ɪk'sploɪt/  = to make good or advantageous use of

mammal (n) /'mæml/  = any animal that gives birth to live young, not eggs, and feeds its young on milk. Cows, humans and whales are all mammals.

manufacture (v) /ˌmænjʊ'fæktʃər/  = to produce goods in large numbers, usually in a factory using machines

prey (n) /preɪ/  = an animal, a bird, etc. that is hunted, killed and eaten by another

substantial (adj) /səb'stænʃl/  = large in size, value, or importance

underlying (adj) /ˌʌndə'laɪɪŋ/   = used to describe something on which something else is based

selection (n) /sɪ'lekʃn/  = the act of choosing someone or something

prohibitive (adj) /prə'hɪbətɪv/   = too much, excessive

principle (n) /'prɪnsəpl/  = a basic idea or rule that explains or controls how something happens or works

creature (n) /'kriːtʃər/  = a living thing, real or imaginary, that can move around, such as an animal

dominate (v) /'dɒmɪneɪt/  = to control or have a lot of influence over somebody/something, especially in an unpleasant way

extinction (n) /ɪk'stɪŋkʃn/  = a situation in which something no longer exists

favour (v) /'feɪvər/   = to support or prefer one particular possibility

fraction (n) /'frækʃn/  = a small part of something, or a small amount

hunt (v) /hʌnt/  = to go after wild animals in order to catch or kill them for food, sport or to make money