Answer:
dwarf planets orbit the sun
dwarf planets are round
pluto is a dwarf planet
Thyriod gland is the right answer
In humans, one feedback mechanism is to either sweat or shiver, depending on the body temperature. Sweating helps lower the body's temperature, and shivering helps raise the body's temperature.
Well a nucleus of an atom has a positive charge
2. is the correct answer
A mutation can occur in DNA too
