*Question*
Having food has a positive impact on an organism 's health, and food is chemical energy. Given these facts, what has a positive impact on an organism's health among the following options: - chemical energy - aerobic capacity - predators - exercise - nutrients - Proteins - habitat destruction - death
**Answer**
chemical energy

*Question*
The moon revolving around the Earth causes the phases of the moon, and tides are cyclical and closely follow the phases of the moon. Given these facts, what occurs in water as the moon revolves around Earth among the following options: - tides - gravity - liquid - energy - pollution - heat - earthquakes - erosion
**Answer**
tides

*Question*
Aflashlight requires a source of electricity to produce light, and good lighting helps people see steps down, rugs or other obstacles. Given these facts, what helps people see among the following options: - cameras - plastic - bushes - an electron lens - focusing a lens - blinds - flashlights - dolphins
**Answer**
flashlights

*Question*
Weathering means breaking down rocks from larger whole into smaller pieces by weather, and when rocks are weathered and eroded they break down into smaller pieces of rocks and minerals. Given these facts, weathering means eroding rocks down into what pieces of minerals among the following options: - similar - sand - small - soils - smaller - larger - calcite - bigger
**Answer**
smaller