Which question can be tested scientifically? Does humidity affect the decay rate of leaves? How does a biologist become successful? What shape are the flowers of a cherry tree? Are puppies cuter than kittens?

Does humidity affect the decay rate if leaves

Explanation:

You can fin the rate by doing unbiased scientific tests

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.