Unit 4 Reading 1
Unit 4 Reaing2
Unit 4 Reading 3
Unit 4 Reading 4
Unit 5 Reading 2
100

continuing for a short time

brief 

100

the land, water, and air in which people, animals, and plants live

environment 

100

a way of doing, making or painting something that is typical of a particular period 

style 

100

one part of a plan, system, piece of writing, and so on

element 

100

one of the parts or features of a situation, idea, or problem

aspect 

200
something in the shape of a ball

sphere 

200

several things that influence or cause a situation 

factor 

200

teach someone or show him or her how to do something

instruct 

200

need or must have 

require

200

provide money for something 

finance 

300

last in a series of actions, events, or parts of something

final

300

the study of birds

ornithology 

300

a brief story that teaches a lesson

fable 

300

give all your attention to a particular person or thing 

focus 

300

make it possible for someone or something to continue to exist over time

sustain 

400

a way of achieving a particular purpose 

device 

400

a natural home for animals and plants 

habitats 

400

when animals act like human 

personification 

400

good or useful 

positive 

400

health, comfort, and happiness 

welfare 

500

the way in which the parts of something connect with each other to form a whole

structure 

500
the animal that hunts other animals

predator 

500

explain cultural beliefs and why certain things occur in the natural world

myth 

500

well respected, famous 

prestigious 

500

a group of leaders in charge of making decisions

committee 

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