Answer:
At the base of Actinopterygii
*This is a unique characteristic of this group.
Explanation:
A peculiar characteristic organ observed in ray-finned fish (as well as in Sarcopterygii, or lobe-finned fish) but not in cartilaginous fish like shark is the swim bladder.
This organ is often described to be a sac containing gas. It helps these set of fish adjust its buoyancy and its position in the water by regulating the concentration of gas present in it.
The swim bladder is formed as a pouch coming off the embryonic digestive tract, and in chondrosteans and holosteans, with a set of teleosts e.g. the eels, it maintains an open pathway to the esophagus. In majority of the bony fish, the swim bladder is totally sealed off, as gas levels in their swim bladder are regulated by producing gas into the bladder via a network of capillaries, the rete mirabile (Latin word for "marvelous net").
The swim bladder is homologous to the lungs of tetrapods. Since they are formed in the same vein. Few fishes that have an open swim bladder employs it as a breathing organ.
Answer: look at the picture
Explanation: Hope this help :D
Answer:
Fatty acids, in particular essential fatty acids alpha-linolenic andlinoleic acid are intimately related to managing inflammation in the body. Fatty acids provide the building blocks for your body to make prostaglandins, agents that increase and decrease inflammation in the body.
Explanation:
The four types of macromolecules in cells are nucleic acids, lipids, proteins, and carbohydrates.
Answer:
if people waste water it might lead to a shortage in the future
Explanation:
