Fact 1: Acar engine usually converts gasoline into motion and heat through combustion. Fact 2: Combustion is a type of oxidation reaction. Given the two facts above, how does a car engine usually convert gasoline into motion and heat?
OPTIONS:
- Evaporation
- compound of hydrogen oxygen
- kinetic energy
- antifreeze
- oil changes
- igniting fuel and oxidiser
- using the turn signal
- oxidation reaction
oxidation reaction
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Fact 1: Hearing is used for sensing sound by animals. Fact 2: An ear improves hearing. Given the two facts above, what do most animals have?
OPTIONS:
- Social
- no legs
- fur
- chlorplasts
- photosynthesis
- traits
- ears
- genes
ears
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Fact 1: Pesticides can cause pollution. Fact 2: Air pollution harms the ecosystem. Given the two facts above, harm to the ecosystem can come from?
OPTIONS:
- pesticides
- fossil fuels
- global warming
- cell mutations
- mechanical weathering
- flooding
- vehicles
- under population
pesticides
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Fact 1: DNA contains genetic instructions for proteins, and RNA helps assemble the proteins. Fact 2: DNA DNA is deoxyribonucleic acid. Given the two facts above, what contains genetic instructions?
OPTIONS:
- Most plants
- Chlorophyll
- Plant reproduction
- red hair
- deoxyribonucleic acid
- freckles
- Veins and arteries.
- h2o
deoxyribonucleic acid
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