Kindly tell me the answer of both questions. the one who answer best will be mark as brainlliest

15-Biology is important to everyday life because it allows humans to better understand their bodies, their resources and potential threats in the environment. Biology is the study of all living things, so it helps people to understand every organism alive, from the smallest bacteria to California redwoods and blue whales.

16-A scientific investigation is a plan for asking questions and testing possible answers in order to advance scientific knowledge. For example the raise of butterfly or dissect a flower experiments.