While gutting a fish, nathan encountered an air-filled sac-like structure. what is the purpose of this structure in fish?

a.
it enables fish to breathe in water.
b.
it serves as a reserve space to store fat.
c.
it harbors bacteria that benefit the fish.
d.
it provides buoyancy to the fish.

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

The location of the stomach is the diaprham

Answers to mastering biology drag the labels to their appropriate locations to complete the punnett squares for morgan's reciprocal cross. drag blue labels onto the blue targets to indicate the genotypes of the parents and offspring. drag pink labels onto the pink targets to indicate the genetic makeup of the gametes (sperm and egg). labels can be used once, more than once, or not at all. hints