Living systems follow the laws of conservation of mass and energy by <span>stating that </span>matter<span> is not created nor destroyed as a result of chemical reaction.
I REALLY hope this has helped you!!! :)
(If you can, please rate as Brainliest answer! If you could, that would make my day!!!!)</span>
Answer: I think it‘s 1, it just makes more sense. Sorry if I am wrong but hope this helps anyone.
Answer: B
Explanation:
Ammonia is so toxic that it can be transported and excreted only in large volumes of very dilute solution. As a result most terrestrial animals simply don't have access to sufficient water to routine excrete ammonia.
The main advantage of urea is its very low toxicity. Animals can transport urea in the circulatory system and store it safely in high concentrations. Also much less water is loss when a given quantity of nitrogen is excreted in a concentrated solution of urea than would be in a dilute solution of ammonia.
Answer:
The heart beats slowly because oxygen consumption is reduced
