*Question*
The looseness of soil has a positive impact on a plant 's roots' growth in that soil, and roots are basic to growth, development and expansion. Given these facts, what soil helps a plant grow? among the following options: - support - soft soil - clay soil - no soil - nutrients - alluvial - sandy soil - loose soil
**Answer**
loose soil

*Question*
The movement of tectonic plates causes volcanic eruptions, and among the most destructive types of debris flows are those that accompany volcanic eruptions. Given these facts, the movement of tectonic plates causes what among the following options: - friction - erosion - to move people - climate - debris flows - flooding - Movement - global warming
**Answer**
debris flows

*Question*
Carbon may be stored in sedimentary rock for millions of years, and limestone is a type of sedimentary rock. Given these facts, where might carbon be stored for million of years among the following options: - In sediment - stomach - limestone - refrigerator - weathering - loose dirt - Earth - body water
**Answer**
limestone

*Question*
Phase changes do not change mass, and melting is a phase change. Given these facts, what is not changed by melting among the following options: - Shape - Mass - hair - fats - O3 - Density - Volume - matter
**Answer**
Mass