Correct answer: Corrosion
Corrosion is the process of materials being eroded by chemical and/or electrochemical reactions with their environment. In this case, it's the Brooklyn Bridge. Better get that fixed, guys.
1 and 63 and 42 and 5
Correct answer: 3 and 4
When compounds like sulphur dioxide and nitrogen oxides are released into the air, they can rise very high into the atmosphere, then mix and react with water, oxygen, and other chemicals to form acidic pollutants (known as acid rain).
The slug and the caterpillarThe toad and the weaselThe fox and the weasel
Correct answer: The fox and the weasel.
Slugs and caterpillars are the hedgehog's prey, not the other way round.
Plant, slug, hedgehog, foxPlant, vole, weasel, foxPlant, caterpillar, toad, fox
Correct answer: Plant, slug, hedgehog, fox.
The slug eats the plant, the hedgehog eats the slug, the fox eats the hedgehog. Sorry, hedgehog.
Correct answer: Bronchi
Bronchi (singular: bronchus) means "branches" in Latin, and refers to the two branching tubes that conduct air from the windpipe into the lungs.
Thermal conductivityStrengthWear resistanceFlexibilityElectrical conductivityHardness
Correct answer: Thermal conductivity
Materials with low thermal conductivity tend to be used as insulation.
Red blood cells fight bacteria, and platelets carry glucoseWhite blood cells fight bacteria, and plasma carries glucoseWhite blood cells fight bacteria, and platelets carry glucose
Correct answer: White blood cells and plasma
White blood cells help fight infections by attacking bacteria, viruses, and germs (pictured). Glucose is carried round the body dissolved in blood plasma, the pale-yellow liquid part of our blood.
Correct answer: Subduction
Subduction occurs when two tectonic plates meet and one is forced under the other and down into the Earth's mantle.
DiaphragmRib cageAir sacsWindpipeBronchiolesCapillaries
Correct answer: Diaphagm
The diaphragm is a tough, dome-shaped muscular partition separating the thorax from the abdomen. When it contracts, it increases the volume of the thorax and inflates the lungs.
Correct answer: Zinc
Brass is an alloy made by combining copper and zinc. You can make different kinds of brass by varying the quantities of zinc used.
Correct answers: Solar, tidal, wave, hydroelectric, biomass, wood, or geothermal.
These are all major sources of renewable energy.
Correct answer: Lava
Molten rock is called magma when it's underground, but it's called lava when it's expelled to the surface due to a volcanic eruption.