*Question*
If igniting a mixture of fuel and "oxidiser" causes a rocket to move, then what causes a rocket to move? Answer choices: - flow of electrons - Electrical energy - expansion into a vacuum - magma - kinetic energy - igniting fuel and oxidiser - pulsars - heat is produced
**Answer**
igniting fuel and oxidiser

*Question*
If dNA causes genetic traits to be passed down to that organism 's offspring, then what causes genetic traits to be passed down to that organism 's offspring? Answer choices: - RNA - rice - SNPs - DNA - gene - sex - the opposite sex - water
**Answer**
DNA

*Question*
If cactus stems hold water to survive droughts, then how does a cactus survive droughts? Answer choices: - It becomes dormant - It helps them survive - roots and shoots - high humidity - circulatory systems - roots to grow - Holding water in the stem - dormant state
**Answer**
Holding water in the stem

*Question*
If the skin protects the body from pollution, then what does the skin protect against? Answer choices: - smallpox - A virus - disease - sun's heat - cancer - leukemia - Pollution - heat energy
**Answer**
Pollution