Organisms that breath make as their final waste product. Even fire creates vapor as a final waste product

Carbondioxide, water and urea are the waste product.

Explanation:

The final waste product produced by the organisms during respiration are carbondioxide and water while urea and nitrogenous waste are also a waste product produced in the body when the digestion of food is completed. The unnecessary substances present in the food are removed and sent it to excretory organ. These waste products are removed from lungs and urinary bladder.

the core of the sun is so hot and there is so much pressure, nuclear fusion takes place, hydrogen is changed to helium. nuclear fusion creates heat and photons. when the heat reaches the earth it warms the molecules of the atmosphere, and they warm other molecules and so on.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation: