Approximately, when was the structure of dna first described? 1900 1950 1800 1850

Are substances released into the environment that in excess amounts cause damage

Scientific method and data analysisa biology student wanted to determine if there is a relationship between resting heart rate and bodyheight. she gathered information from 12 classmates and constructed the table below.resting heart rate (beats per minute)student height (cm)155. 156156165180180190194195

Explain how scientists use geologic time to determine the age of landforms.