Science Terminology for 11-13 Yr Olds --- (Jon Witts)

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A

when living cells or blood take in food or oxygen

light energy hits a surface and is converted into heat energy

Słowa kluczowe:

what happens when digested food particles pass from the digestive system into the bloodstream.

to build up

the process of building up or gathering together

has a pH less than 7, for example stomach acid.

changes to organisms which allow them to survive or to do their job

glucose from food reacts with oxygen to produce energy

has a pH greater than 7.

air sacs in the lungs where gaseous exchange happens

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