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When objects or people are arranged in a certain way, they are in a _________. • Some birds fly in a ________ that looks like the letter V
formation
Animals that _______ travel to different regions of the Earth. • The best time to see birds _______ is in the spring and autumn.
migrate
When an action is __-__________, people work together to make sure it happens correctly. • __-__________ movements are organised and carried out in the same way.
co-ordinated
A ______ is a group of things that move or work together. • He has a good ______ for organising his research.
system
If you ______ __ a group, you are a member of it. • Humans usually want to ______ __ a group.
belong to
A ______ is the person in charge of a group or an organisation. • Many groups choose a ______ to be in charge.
leader
To ______ something is to think it is true, even if you haven’t proven it. • Why do you ______ that I ate the chocolate?
assume
There is a _________ when a whole group agrees about something. • In a group _________, members come together and agree on a decision.
consensus
A _________ problem, employer, partner, etc. may become one in the future, although they are not one now. • _________ predators will probably attack others
potential
When you ______ something, you like it more than another thing. • Many people ______ coffee to tea in the morning.
prefer
When you _______ something, you become aware of it. • I just _______ed that I left the garage door open.
realised
Something is _________ if a whole group does it or experiences it together. • __________ behaviour is usually beneficial to a group.
collective
When someone or something is _________, they make things happen without wasted time or effort. • An _________ person is organised and doesn’t waste time.
efficient
