*Question*
If for short distances, bridges can replace ships, then which structure can replace a ship for short distances? Answer choices: - Weight - a bridge - Gravity - watershred - a yacht - Fuel cells - a house - a skyscraper
**Answer**
a bridge

*Question*
If animals require hydrogen and oxygen for survival, then which are required for animal survival? Answer choices: - hydrogen and oxygen - Chemical energy - oxygen and methane - critical organs - sense organs - hydrogen and helium - light and dark - Organic compounds
**Answer**
hydrogen and oxygen

*Question*
If most deep gorges are formed by flowing rivers through erosion over long periods of time, then what are formed by flowing rivers through erosion over long periods of time.? Answer choices: - streams - soft soil - patch reefs - flooding - Sediment - seas - deep gorges - wildfires
**Answer**
deep gorges

*Question*
If female gametophytes produce eggs inside the part of the flower where the fruit will eventually develop, then female gametophytes produce eggs inside the part of the flower where what will eventually develop? Answer choices: - embryos - bushes - seeds - fruit - honey - fertile - pollen - bamboo
**Answer**
fruit