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A

Absorb

when living cells or blood take in food or oxygen

Absorbs

light energy hits a surface and is converted into heat energy

Accumulate

to build up

Accumulation

the process of building up or gathering together

Adaptations

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

Aerobic respiration

glucose from food reacts with oxygen to produce energy

Alveoli

air sacs in the lungs where gaseous exchange happens

Amplitude

determines how loud or soft a sound is

Anaerobic respiration

chemical reactions that release energy without oxygen

Angle of incidence

angle between the normal and an incident ray

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