yes both plant and animal cells contain an endoplasmic reticulum(ER)
Answer:
either oxygen or argon, because they are both in the atmosphere
Explanation:
Answer:
At the beginning you start out with a lot of energy and stamina but as you progress, maybe five minutes in, you start to get out of breath. While breathing harder, you are trying to intake more oxygen and at the 10 minute mark you can feel your muscles burning a little bit and tire out more. At this point you are gasping for oxygen because your muscles are deprived of oxygen and you body makes lactic acids which you muscles can use instead of oxygen. By the end of it you are very tired.
Explanation:
Hope this helps! I am not sure how scientific of an explanation you wanted.
