Quiz: New Butterfly or Old? Watching the Wings for Clues (Back to Lesson) National Science Education Standards Inquiry Use data to conduct a reasonable explanation. (K-4) Science investigations involve asking and answering a question and comparing that to what scientists already know about the world. (K-4) Life Science Each plant or animal has different structures that serve different functions in growth, survival, reproduction. (K-4) Plants and animals have life cycles that include being born, developing into adults, reproducing, and eventually dying. (K-4)