What does the immune system protect the body against?
changes of the internal body temperature
changing environmental conditions
changes caused by harmful pathogens
changes in the ph of the blood

~~16. while watching a special on animals, brianna discovers that hares tend to lose heat through their ears. based on this and what is known about surface-to-volume ratios, propose an explanation as to why hares that live in hot climates (such as the desert) have large, extended ears

Isotopes of the same element have differ in their

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because