Some people have the ability to roll their tongue (rollers) while other people cannot roll their tongues (non-rollers) .An investigation was conducted to how many learners in Grade 10-12 could roll their tongues . formulate a hypothesis? please help ​

Dna is the genetic material that makes up living things, and folic acid plays an important role in the information of dna. jon wants to study the effect of folic acid on dna formation in microbes. which statement accurately describes the variables in this study

During a hot day, warm and moist air rises and cools in the atmosphere. which even would occur next on such a day? a. condensed droplets would gather to become water vapor. b. water vapor would condense into tiny droplets. c. water droplets would evaporate to form rain and snow.

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen