A garden has a higher level of oxygen compared to a city road. A garden has plants and trees. Plants produce oxygen and sugars from carbon dioxide. A city road is composed of industrial buildings, vehicles, humans, and animals. They consume oxygen that is why the oxygen content is lesser on a city road.
A system is a group of organs that work together and provide an organism with an advantage for survival. It is the most complex organization in your body and the final level of the progression from cells to tissues to organs and then systems.
Florida keys
The Florida keys is a coral cay archipelago in southeast United States.The Florida keys is an island which is near the gulf. The Florida keys is an archipelago landform.
Sea caves
<span>A sea cave,also known as a littoral cave,is a type of cave formed primarly by the wave action of the sea.Sea caves are a coastal and an oceanic landform.A sea cave causes by erosion because the rocks break down then terode all the materials to create sea caves.</span>
It might be between plants and water I'm not sure cause I'm on the same question.
It should be 3! That is the only logical answer to the question...
