A scientist is studying a species of mouse living in a field. She observes that the mouse nests are mostly made from cogongrass, a type of grass that is common in the field. After doing some research, she creates the hypothesis that the mice make their nests out of materials that are easy to find. What would be the scientist's next step in gaining knowledge about how the mice choose their nesting materials?

A.
coming up with more questions about the mice
B.
creating other possible hypotheses about the nests
C.
performing an experiment to test her hypothesis
D.
publishing her hypothesis in a scientific journal

Hunting in the darksome fish rely on senses beyond sight. in the darkness of the marianas trench, a fish called the rattail has an extremely sensitive sense of smell. the fish uses scent, rather than sight, to steer toward food. once it's near food, the rattail uses a special organ on the bottom of its chin to guide itself by feel.marine snowone staple of the deep sea diet is "marine snow," flakes of organic, edible substances that sink down from the upper ocean. animals at the ocean's bottom find sustenance in everything from the bodies of dead creatures to fecal matter. marine snow is diverse enough to support numerous species. for instance, several species of snails and worms feed exclusively on deceased whales.microorganismsthe deep sea is an intricate ecosystem, and even the ocean floor itself plays a part. hydrothermal vents are cracks in the sea floor where erupting magma mixes with ocean water to produce plumes of hot, sulfur-rich chemicals. some microbes can use these chemicals for energy, sustaining their existence and that of the animals who depend on their roles in the deep sea food chain.