Answer:
skin acts as a protective barrier, therefore it does not secrete hormones
When cleaning up water pollution in a large lake or river, it is important to clean up the entire watershed. It<span> is a basin-like landform defined by highpoints and ridgelines that descend into lower elevations and stream valleys. This is because pollution can be transfered to other areas of the lake or the river when this part is not cleaned well.</span>
Answer:
A scientific question is one where an investigation can be designed and completed to find out the answer without having to do multiple, entirely different investigations to get there. In a word, a scientific question is testable, but a non scientific question is not.
