Amphibians can regulate their own temperature. true or false ?

false because Amphibians, like reptiles, are ectotherms. This means that they cannot produce sufficient internal heat to maintain a constant body temperature. Instead, amphibians' body temperature varies, depending on the surrounding temperature. ... It means that they're responsible for regulating their own body temperature.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added

those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive