Grasses supply most of the food consumed by people worldwide, and because food contains energy. Given these facts, what contains most of the energy used by people worldwided among the following options: - heat - Light - coal - grasses - Cooking - glucose - A computer - gasoline
grasses

Dropping an object into water causes vibrations in the water, and sound vibrations can be compared to pond ripples. Given these facts, dropping an object into water causes what among the following options: - pond ripples - pond scum - chemical changes - heat energy - kinetic energy - activation energy - color changes - towels fluffed
pond ripples

Q: The mass of a planet causes the pull of gravity on that planet, and gravity accelerates mass. Given these facts, what causes a planet to accelerate among the following options: - other planets - magnets - wind - gravitational pull - flow of electrons - It gets heated up - heat energy - energy of moving objects
A: gravitational pull

Question: Chloroplasts are organelles that are found in the cells of plants and algae, and all plants are of bush type. Given these facts, what contains chloroplasts among the following options: - h2o - Trees - Fungi - insects - grass - flowers - bushes - humans
Answer: bushes

*Question*
Sound can be used for communication by animals, and sounds are vibrations in air. Given these facts, vibrations in air can be used for what by animals among the following options: - activation energy - communication - Something to move - sleeping - sustenance - Heart rate - food and shelter - tasting
**Answer**
communication

*Question*
Water vapor cooling causes that water vapor to condense, and all carcasses are chilled with cool air for 48 hours. Given these facts, what causes water vapor to condense among the following options: - water vapor exploding - water vapor heating up - water vapor disappearing - circulatory systems - aqueous solution - Heat energy - water vapor chilling - Evaporation
**Answer**
water vapor chilling