Answer:
The condition of the Earth had to become favourable before it could support any form of life.
The formation of the different layers around the earth like the ozone layer was necessary before life could originate. Primitive species such as some prokaryotes were able to live in hydrothermal conditions during the initial times. With the passage of time, as the concentration of oxygen increased due to photosynthetic prokaryotes, situations became favourable for eukaryotic organisms to arise.
Answer:
Buying products that are built to last
Explanation:
The goal of a circular economy is to keep things going around the "circle" as many times as possible. This means reusing and repairing items before they are recycled. After being recycled and remade, they will be reused and repaired until it is time to be recycled again. The process keeps continuing. :)
Hope this helps!
B organ system contains organs, tissues and cells
Homeostasis is an organism's attempt to maintain a stable unchanging interior environment despite external influences. High levels of glucose in the blood affects the homeostasis of a human, as a response insulin is secreted from the pancreas into the bloodstream and directly to organs (mainly the liver). Insulin receptors are cell membrane bound protein receptors, when the insulin receptors are fully functioning insulin will bind to the insulin receptors, this binding sets off a very complex reaction within the cell that will make the cell take actions to reduce the blood-glucose levels. If the insulin receptors are faulty the insulin will never bind to cells and set off these reactions, therefore the blood glucose level will remain high. A high blood glucose level is dangerous and will result in <span>hyperglycemia and death if untreated. Diabetes is not normally caused by faulty insulin receptors although the body would react very similarly to a diabetes patient if the insulin receptors were faulty.
I can go into more detail if you wish.</span>