If sharks convert oxygen with gills, then what do sharks use to convert oxygen? Answer choices: - gills - skin - blood - fins - Enzymes - mouth - tail - fibers
gills

If plants need the sun to grow, then what do plants need to grow? Answer choices: - the sun - nutrients - body water - food - seeds - Earthworms - sunlight - hormones
the sun

Q: If using hydropower reduces greenhouse gases, then what does hydropower help reduce? Answer choices: - deforestation - Greenhouse gases - enormous damage to homes - salinity - energy usage - flooding - massive damage - Temperature
A: Greenhouse gases

Question: If powering a device with a battery requires a path for electrons to flow through a closed circuit, then powering a device with a battery requires a path for electrons to flow through? Answer choices: - electromagnetic energy - direct energy - rays or beams - hydrogen and oxygen - heat energy - a closed circuit - kinetic energy - an object
Answer: a closed circuit

*Question*
If aperson is tired and lacking in energy without cellular respiration, then aperson is what without cellular respiration? Answer choices: - major threat to health - dormant state - They may not survive. - breathing deeply - tired and lacking energy - hydrated and full - dead organisms - awake and sleepless
**Answer**
tired and lacking energy

Q: If earth 's tilt on its rotating axis causes winter, then what is caused by Earth 's tilt on its rotating axis? Answer choices: - erosion - Day and night - rainfall - Weather - wind - Gravity - Winter - flooding
A: Winter