<u>Answer:</u>
The characteristic that is common to "all three groups of reptiles" is that they are all ectotherms.
<u>Explanation:</u>
- Almost all the reptiles are referred to as 'ectotherms' because they are all cold-blooded.
- They adjust their body temperature according to the temperature of the surrounding.
- Reptiles like snakes do not have claws or eyelids. Moreover, not all reptiles protect their eggs.
- The "sea turtles" lay eggs on the seashores and go back to the seas.
- Thus, the only common characteristic among all the reptiles is that they are all ectotherms.
Answer:
In meteorology, convection is the transfer of heat and other atmospheric properties by the movement of masses of air, particularly in an upward direction. In geology, it is the slow movement of material below the Earth's crust. Some convection is manmade.
They are concentrated in certain zones where tectonic plates rub against one another.
I hope this helps!
Minerals, organic matter, water and air.