A Swim Bladder is not present in cartilaginous fishes. Also called a fish maw or gas bladder the swim bladder is a gas-filled bladder that allows many bony fish to control their buoyancy by filling or releasing gas form the bladder. This allows them to change bouyancy without wasting metabolic energy by swimming.
There are six aorganells in an animal cell. The Nucleus, Ribosomes, Endoplasmic reticulum, Golgi apparatus, Chloroplasts and the Mitochondria.
Delusions is a idiosyncratic belief or impression that is firmly maintained stating that they make false impressions on people
Some symptoms are irritable angry or a low mood also hallucinations
Answer:
C: A solid metal ball in the middle of a pool of liquid.
Explanation:
Since the student is studying the earth, the core area is made up of a solid metal ball in the middle of a pool of a liquid.
- The core is the inner most part of the earth.
- It exists in the middle of the earth.
- The core is divide into two layers; inner core and outer core.
- The inner core is a solid ball of metal.
- The outer core is a liquid metal under high temperature and pressure.
