HELP ON NUMBER 5 IMPORTANT

Which of the following would most likely be key to gathering evidence that the rna world hypothesis is valid? creation of suitable environments for long-term study of single-celled organisms simulation of early earth conditions and long-term study of the resulting molecules development of a system for studying the microsphere's ability to absorb additional molecules categorization of the different specific conditions that result in the development of microspheres

Which type of stimulus do mechanoreceptors detect? sound pain heat light

Which statement names a physical property of wood? wood does not rustwood can burnwood can rotwood is softer than coal