craft. These bracelets were crafted by Native Americans.
beak. Birds use their beaks to pick up food.
quantum mechanics
go back and forth. She swayed gently back and forth to the music.
distingiushed. He had a long and distinguished career as a diplomat.
cognitive. Studies show a connection between aerobic exercise and cognitive ability.
boundary. The Ural mountains mark the boundary between Europe and Asia.
jellyfish
instead. There's no coffee - would you like a cup of tea instead?
relating to or involving the processes of thinking and reasoning
the hard, pointed part of a bird's mouth
to make objects, especially in a skilled way
a real or imagined line that marks the edge or limit of something
in place of someone or something else
respected and admired for excellence
moving first in one direction and then in the opposite one
a sea creature with a soft, oval, almost transparent body
a theory that explains the behaviour of elementary particles, both separately and in groups