Completing a circuit causes electricity to flow through that circuit, and an electrical current is a flow of electrons. Given these facts, completing a circuit causes _ to flow through that circuit among the following options: - heat energy - pulse - heat - photons - complete - energy - Heart rate - electrons
electrons

Aplant requires food for survival, and most foods contain several nutrients. Given these facts, what does a plant require for survival among the following options: - offspring - nutrients - soul - Light - carbohydrates - Glucose - sunlight - humans
nutrients

Q: Changes in the pH of soil can cause plants to die, and famines are extreme shortages of food that cause people to die of starvation. Given these facts, changes in what can cause extreme shortages of food among the following options: - pH of soil - Dehydration - climate - colder weather - global warming - salinity - Time and energy - Winter
A: pH of soil

Question: Decomposition increases amount of organic matter in soil, and dirt, soot or soil is easily distinguishable from mildew. Given these facts, what increases amount of organic matter in dirt among the following options: - animal transport - composure - composite - decomposition - chemical changes - fossil fuels - composition - nutrients
Answer: decomposition

*Question*
Heat and pressure change the remains of prehistoric living things into natural gas, and prehistoric plants, for example, turn into light oils and gas. Given these facts, what does heat and pressures make from dead plants among the following options: - Soil - peat - Heat - Oil - moss - Water - coal - Gas
**Answer**
Gas

Q: Mollusks are invertebrates such as the common snail, and mollusks are bilateraly symetrical and are protostomes. Given these facts, what is bilaterally symmetrical and a protostome among the following options: - gastropod shells - honeybees - humans - shells - bears - the common snail - peachleaf willow - the eyes
A: the common snail