Which property of argon makes it useful for potassium-argon dating?

It is an unstable element. It remains trapped in rock.

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.

answer; ///(b) it is composed of four protein chains and four heme groups;