Version per impression

Browse the glossary using this index

Especial | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Tot

F

fat

substance found in food, used as an energy store and part of cell membranes.

fermentation

breakdown of a substance by bacteria or yeasts, usually without oxygen

fibre

food used to keep waste moving through your digestive system.

Filtered

solid bits are separated from a mixture

Food chain

a diagram showing what an animal eats and what eats it

Food web

a diagram made of lots of joined up food chains, showing what eats what in a habitat and the flow of energy

Fossils

remains of plant or animal material found in rock

Freezes

changes from liquid to solid state

Frequency

number of vibrations a second