If flowing water can slowly dissolve carbon in limestone, then flowing water can slowly _ carbon in limestone.? Answer choices: - alter - destroy - erode - allow growth - dissolve - heat - a solute - rain
dissolve

If eggs and sperm have coiled structures made of DNA and proteins, then what are one thing the combination of proteins and DNA make up? Answer choices: - alleles - sperm - insects - embryos - fusion - PDAs - humans - complex
sperm

Q: If computers require electrical energy to function, then what requires electrical energy to function? Answer choices: - vehicles - A computer - A gas stove - A candle - Batteries - nervous system - critical organs - buses
A: A computer

Question: If mammals do not usually lay eggs, then what does not normally lay eggs? Answer choices: - swea - insects - Mammal - chickens - cows - animals - parasites - ducks
Answer: Mammal

*Question*
If biofuel is used to produce power by burning, then biofuel is used to produce what when it is burned? Answer choices: - water - energy - glucose - oil - gasoline - power - heat - Light
**Answer**
power

(Q).
If aplanet spinning on its axis causes cycles of day and night on that planet, then what causes day and night cycles on a planet? Answer choices: - seasons - carbon dioxide - flow of electrons - gravitational pull - fissures of hot, acidic water - spinning on its axis - heat energy - energy of moving objects
(A).
spinning on its axis