2. Osteichthyes are able to breathe without swimming because A. They can move their operculum, which covers the chamber near
their gills.
b. They have a swim bladder that stores air for them.
C. All fish can breathe without swimming
d. All of the answers are correct.

biology is the study of life. it is the study of living organism.

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