*Question*
If one important outcome of exercise in older adults is stronger bones, then agood way for older adults to strengthen bones is to? Answer choices: - Through play - drive more slowly - exercise - use a hearing aid - quadriceps - donate bone marrow - sweating - movement
**Answer**
exercise

*Question*
If aplanet accelerates because of gravity, then what causes a planet to accelerate? Answer choices: - other planets - magnets - wind - gravitational pull - flow of electrons - It gets heated up - heat energy - energy of moving objects
**Answer**
gravitational pull

*Question*
If heat and pressure change the remains of dinosaurs into natural gas, then what remains are changed into natural gas by heat and pressure change? Answer choices: - oxygen - dinosaurs - bacteria - skull - clouds - humans - fossil fuels - sea squirts
**Answer**
dinosaurs

*Question*
If zinc has a positive impact on the healing of cuts, then what kind of impact does zinc have on healing cuts? Answer choices: - heat energy - lowered energy cost - no impact - major threat to health - it causes infection - a positive impact - circulatory systems - a negative impact
**Answer**
a positive impact