Hydropower requires damming a river, and rivers are dammed to create reservoirs and hydroelectric power. Given these facts, what feature of the landscape will result from hydropower among the following options: - mountain - river - ocean - Conifers - salinity - erosion - homogenous - resevoir
resevoir

Arubber band snapping causes the particles in the rubber band to vibrate, and by it's nature, a vibration is a frequency wave . Given these facts, what does a rubber band snapping cause among the following options: - frequency wave - friction - electrically - h2o - death - chemical reaction - elastic - Electrical energy
frequency wave

Q: The color of leaves on deciduous trees usually changes in the autumn season, and common deciduous trees are the oak, elm and beech. Given these facts, which tree's leaves change color in autumn among the following options: - Fir - wind - Palm - blue - elms - Oak - Ficus - Aves
A: Oak

Question: Weathering means breaking down rocks from larger whole into smaller pieces by weather, and erosion begins with the weathering, or breaking down, of rocks and soil. Given these facts, erosion breaks rocks down from larger parts into what among the following options: - river - ground - soil - small - dirt - tiny - crust - sand
Answer: soil

*Question*
Veins generally carry deoxygenated blood, and blood returns to the heart by the veins. Given these facts, what supplies the heart among the following options: - organ - Energy - veins - ovaries - glucose - oxygen - sugar - alveoli
**Answer**
veins

(Q).
Carbon may be stored in sedimentary rock for millions of years, and limestone is a type of sedimentary rock. Given these facts, what can carbon be stored in for millions of years among the following options: - limestone - fossil fuels - hydrocarbons - graptolites - fish - humans - h2o - layers of fat
(A).
limestone