A student is measuring the volumes of nectar produced by a flowering plant for an experiment. He measures nectar from 50 flowers using a graduated
cylinder that measures to the nearest milliliter (mL). Which statement
describes a change that could help improve the results of his experiment?
O A. His measurements will be more accurate if he uses a graduated
cylinder that measures to the nearest tenth of a mL.
O B. His measurements will be more accurate if he takes
measurements from an additional 100 flowers.
C. His measurements will be more precise if he uses a graduated
cylinder that measures to the nearest tenth of a mL.
D. His measurements will be more precise if he takes me
measharen
irements
from an additional 100 flowers.

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.