*Question*
Fact 1: Exercise increases a body 's strength. Fact 2: Strength training is also effective for increasing bone strength in older adults. Given the two facts above, answer the question "A good way for older adults to strengthen bones is to " with the following options: - Through play - drive more slowly - exercise - use a hearing aid - quadriceps - donate bone marrow - sweating - movement
**Answer**
exercise

*Question*
Fact 1: The mass of a planet causes the pull of gravity on that planet. Fact 2: Gravity accelerates mass. Given the two facts above, answer the question "What causes a planet to accelerate?" with the following options: - other planets - magnets - wind - gravitational pull - flow of electrons - It gets heated up - heat energy - energy of moving objects
**Answer**
gravitational pull

*Question*
Fact 1: Heat and pressure change the remains of prehistoric living things into natural gas. Fact 2: Dinosaurs and Other Prehistoric Creatures Dinosaurs are just one group of prehistoric animals. Given the two facts above, answer the question "what remains are changed into natural gas by heat and pressure change?" with the following options: - oxygen - dinosaurs - bacteria - skull - clouds - humans - fossil fuels - sea squirts
**Answer**
dinosaurs

*Question*
Fact 1: Zinc has a positive impact on the healing of wounds. Fact 2: An incised wound is a clean cut. Given the two facts above, answer the question "What kind of impact does zinc have on healing cuts?" with the following options: - 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