What are the major evolutionary trends that developed among major vertebrate groups, speciffically those that allowed for the transition from aquatic to terrestrial life

Vertebrates are known to be animals with backbones.  The following are the evolutionary changes of vertebrates:  

*Jaws - Fishes before sucked and rubbed on their preys but now, they already have jaws that enable them to more efficacious in getting their preys.  

*Lungs and limbs - Animals on the sea need to adapt when they look for their preys on land, in turn, they had evolved to acquiring lungs for breathing and limbs for moving.  

*Endothermy - ‘Endo’ meaning internal and ‘therm’ meaning temperature. This gave animals’ bodies heat supply from burning the food they eat.  

The proton has a positive charge while the neutron has no charge they both make up the nucleus of the atom while the elections have a negative charge and surround the nucleus of the atom. the protons and electrons are used to calculate the atom's mass whereas the neutrons don't affect the mass

The salt in the sea water dehydrated the sailor because her body could not take in the amount to salt in the sea water