Which of the following describes something that oceanographers study? aquifers
wetlands
currents and waves
river bottoms

currents and waves

Explanation:

oceanographers study the physical processes within the ocean so they would not study:

wetlands because wetlands are not part of the ocean.

neither would they study aquifers or river bottoms

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.

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u