Answer:
Ionic bonds form when atoms gain or lose electrons, because electrons are negatively charged an atom that loses one or more electrons will become positively charged. Ionic bonding is the attraction between negatively and positively charged electrons. Hope this helps :)
Answer:
Multicellular eukaryotes evolved from unicellular prokaryotes by the process of endosymbiosis
Explanation:
All living beings have evolved from three groups of animals closely related with each other.Domains: Archaea,bacteria and eukarya.the archaea and bacteria are unicellular organism surrounded by single cell water and and coiled stand of DNA. Eukaryotic cells are more complex and with a linear strand of DNA which is in the nucleus. Actually mitochondria which had evolved from a free living bacterium which was swallowed by another cell. The host cell benefited from the chemical energy that mitochondria produced and mitochondria in turn is benefited to be inside the protected environment. Mitochondria is the main organelle which the multicellular eukaryotes with unicellular prokaryotes.
Answer:
may be they are history and geography
Im thinking C. The skeletal system but not 100% sure.
