No system is completely closed off from its surroundings Which example represents a system that is almost completely closed

A- a wood burning-fireplace

B- A capped thermos

C- An uncapped soda bottle

D- a pot of boiling water

No system is closed off by it surroundings.

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.

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.v