*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 phase changes do not change amount of matter, then what do phase changes not change? Answer choices: - Time and energy - properties of object - Heat energy - color of object - population movement - shape of object - amount of matter - Molecular kinetic energy
**Answer**
amount of matter

*Question*
If the Great Barrier Reef was formed by exoskeletons, then what was formed by exoskeletons? Answer choices: - heat produced - remains of prehistoric life - layers of fat - The area was once underwater - the Great Barrier Reef - the body's largest organ - sedimentary rocks - it keeps an organism warm
**Answer**
the Great Barrier Reef

*Question*
If squid are a major food source for organisms, then what are a major food source for organisms? Answer choices: - fungi - bushes - plants - orchids - elms - Flowers - squid - trees
**Answer**
squid