*Question*
Q: Plants not only contribute food but what else for organisms? Read this paragraph and choose the correct option from the provided answers: The oxygen atoms, however, form oxygen gas, which is a waste product of photosynthesis. The oxygen given off supplies most of the oxygen in our atmosphere. Before photosynthesis evolved, Earth's atmosphere lacked oxygen altogether, and this highly reactive gas was toxic to the many organisms living at the time. Something had to change! Most contemporary organisms rely on oxygen for efficient respiration. So plants don't just "restore" the air, they also had a major role in creating it!. Choices: - dioxide - hydrogen - carbon - oxygen A:
**Answer**
oxygen

*Question*
Q: The amount of kinetic energy in a moving object depends directly on its mass and what else? Read this paragraph and choose the correct option from the provided answers: The amount of kinetic energy in a moving object depends directly on its mass and velocity. An object with greater mass or greater velocity has more kinetic energy. You can calculate the kinetic energy of a moving object with this equation:. Choices: - volume - direction - density - velocity A:
**Answer**
velocity

*Question*
Q: What of most species are resistant cells that can survive harsh conditions? Read this paragraph and choose the correct option from the provided answers: Choices: - gonads - phenotypes - subtypes - zygotes A:
**Answer**
zygotes

*Question*
Q: What happens when liquid water evaporates? Read this paragraph and choose the correct option from the provided answers: The water cycle plays an important role in weather. When liquid water evaporates, it causes humidity. When water vapor condenses, it forms clouds and precipitation. Humidity, clouds, and precipitation are all important weather factors. Choices: - condensation - seawater happens - snow - humidity happens A:
**Answer**
humidity happens