Arrow Sign Collection (page 6)

Illustration of satellites orbiting around the Earth

Illustration of Apollo 11 making its return journey from Moon back to Earth

Illustration of agricultural flat roll reducing tilth to finer crumb

Illustration showing weather depression forming with warm air rising over cold air

Illustration of formation of weather chart where warm, tropical air meets cold, polar air forming a depression

Illustration showing formation weather depression where cold air moving under warm air with front splitting into two

Illustration of ploughing soil using harrow

Illustration of rotary cultivator

Illustration of seed drilling showing coulter cutting groove in tilth into which the seed falls

Illustration showing substance changing state from gas, solid and liquid

Illustration showing digital sound wave

Illustration showing gas exchange in alveolus

Illustration showing prevailing winds, Hadley cells and the Coriolis effect

Illustration of right angled triangle and tall building

Digital illustration of deep muscle-tendon of Tuna

Digital illustration of avian respiratory system

Illustration showing how hologram photography works

Illustration of Reload computer icon

Illustration of upthrust balancing weight of ship and keeping it afloat

Digital illustrations showing effects of global warming on planet and ozone layer

Illustration of reflex action in human arm

Illustration of tornado forming over rural landscape

Illustration of the life cycle of a fern, inset showing spermatozoa entering female organ (archegonia)

Illustration of the structure of a hurricane

Black and white illustration of signpost

Illustration of maps showing voyagers undertaken by Christopher Columbus

Illustration showing route taken by Crusaders over land and sea

Illustration of root, brassica, and legume vegetables arranged in pie chart with direction arrow signs

Illustration of lifecylce of fern from seedling to frond

Sequence of illustrations showing how to make a pink and blue paper boat

Illustration of global wind formation through rotation and deflection (Coriolis effect)

Illustration of air blowing up balloon

Cross section illustration of simple generator

Illustration of Alexander the Greats route in purple and Empire in green

Illustration of world map showing route of Darwins HMS Beagle in purple

Illustration of ultraviolet light and ultraviolet waves appearing through the ozone hole

Illustration of aeroplane vapour trail and air currents

Series of illustrations showing Roman man dressing in toga

Illustration of Hadley Cells over Europe and Africa on world globe

Digital cross section illustration of showing the lines of longitude measured from the centre of the Earth

Digital illustration of white arrow symbols representing circulation in turquoise circle on white background

Digital illustration of world map showing ocean currents

Digital illustration of global warming on ozone layer

Digital illustration showing how warm air expands and rises, and cold air sinks causing low and high pressure zones

Digital illustration showing leaf growing towards light with auxin on the shaded side of stem

Digital illustration showing the magnetic field of magnet

Digital illustration showing formation of clouds

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