*Question*
Coral reefs provide food and shelter to many ocean organisms, and coral reefs are predominantly calcite. Given these facts, what provides food and shelter to many ocean organisms among the following options: - houses  - umbrellas  - limestone  - ferns  - sharks  - barnacles  - calcite  - sheds
**Answer**
calcite

*Question*
Staying warm has a positive impact on an animal 's survival, and animals who live in the forest have very soft, warm fur. Given these facts, what has a positive impact on a forest animal's survival among the following options: - fire  - horses  - hair  - play  - fur  - warm  - tools  - rest
**Answer**
fur

*Question*
Rain causes erosion, and erosion of rock makes nutrients available. Given these facts, what causes nutrients to be available among the following options: - water  - rivers  - saliva  - fats  - Enzymes  - protein  - spring  - Cooking
**Answer**
water

*Question*
Cells that divide uncontrollably may form a tumor, or abnormal mass of cells, and tumor Tumors are masses of neoplastic origin. Given these facts, cells that divide which way may form masses of neoplastic origin among the following options: - non-neoplastic  - controllably  - epidermal  - an organism's body  - seldomly  - epidermis and dermis  - uncontrollably  - Veins and arteries.
**Answer**

uncontrollably