*Question*
Heating salt water causes the water to evaporate while the salt remains, and maybe the fillings evaporated during steaming. Given these facts, what would remain if you were to make a pot of salt water start to steam among the following options: - heat - oxygen - carbon - fluid - liquid - water - algae - salt
**Answer**
salt

*Question*
Having no natural predators increases population size, and organisms have to be better adapted as population size increases. Given these facts, what does having no natural predators mean creatures have to be among the following options: - Echinoderm. - animals - heterotrophs - Echinoids - slow and inefficient - better adapted - threatened - dangerous
**Answer**
better adapted

*Question*
Flatworms belong to the phylum Platyhelminthes, and flatworms are bilaterally symmetric. Given these facts, what animal found on Earth would belong to the phylum Platyhelmintes among the following options: - bilaterally symmetrical worms - Something with a head, thorax, and abdomen - remains of prehistoric life - Something that makes plants green - Microscopic organisms - female sex cells - it helps plants in growing - share properties
**Answer**
bilaterally symmetrical worms

*Question*
Sinkholes are formed by precipitation, and because of sinkholes, houses have disappeared. Given these facts, houses have disappeared because of what among the following options: - Physical weathering - moonlight - sunshine - flooding - clouds - precipitation - scarce resources - erosion
**Answer**
precipitation