*Question*
Tidal energy can be used to produce electricity, and tidal energy schemes capture water at high tide and release it at low tide. Given these facts, what can be produced by capturing water at high tide among the following options: - more fish - clearer water - mussels - warm water - an image - electricity - a delta - watershred
**Answer**
electricity

*Question*
Invertebrates are animals that lack a vertebral column, or backbone, and insects are the most common invertebrates. Given these facts, what lack a vertebral column among the following options: - Conifers - vertebrates - ferns - sharks - humans - insects - cacti - fish
**Answer**
insects

*Question*
Being burried under soil and mud changes peat into coal through extreme heat and pressure in a swamp over a long period of time, and dead plants provide peat moss. Given these facts, what changes into coal when buried under soil and mud among the following options: - rocks - sun - animals - cellulose - moon - plants - Newton - tunicates
**Answer**
plants

*Question*
Igneous rocks are formed from magma cooling, and when the magma cools and hardens, it turns into igneous rock. Given these facts, where do igneous rocks come from among the following options: - hardened magma - limestone - evaporation - acid - rain - permineralization - heating liquids - germany
**Answer**
hardened magma