*Question*
Constriction occurs when the muscular walls of blood vessels contract, and muscle spasms are involuntary contractions of a muscle. Given these facts, what can muscle spasms cause among the following options: - massive damage - matter vibrating - constriction - friction - Dehydration - ketosis - stretching - photosynthesis
**Answer**
constriction

*Question*
Evaporation can be used for separating a solute from a solvent in a solution, and water as a Solvent Water is an excellent solvent. Given these facts, evaporation can be used for separating a solute from among the following options: - soil - salts - Water - vapors - liquid - gas - compounds - lipids
**Answer**
Water

*Question*
Uneven heating of the Earth 's surface cause wind, and wIND Wind is the movement of atmospheric air on a planet. Given these facts, uneven heating of Earth's surface causes the movement of what among the following options: - Earth's core - underground air - electromagnetic energy - atmospheric air - Earth's moon - Greenhouse gases - kinetic energy - an object
**Answer**
atmospheric air

*Question*
Viruses infect and live inside the cells of living organisms, and plants and animals are organisms. Given these facts, what do viruses infect among the following options: - animals - plants - bacteria - nonliving things - gravity - density - the skin - insects
**Answer**
animals