What is a characteristic of all amphibians? A. are endothermic
B. covered in impermeable skin
C. lack a tail
D. have gills at some stage of development

Suspension typei

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

D.) domain, kingdom, phylum, class, order, family, genus then species