The three primary mechanisms by which molecules move across the cell membrane are :
- Passive transport, the movement of molecules that does not require energy
- Diffusion, when molecule move from higher concentration to lower concentration
- Osmosis, when molecule move to higher concentration
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Answer:
Our sun is extremly hot. like our sun, hydrogen is being converted into helium, a process which gives off energy that heats the star
Explanation:
Answer:
For the K category it wants you to fill in background information, for example, if you chose the Artificial Heart article. Have you read any stories or seen any movies about this topic? Have you met anyone with a heart transplant? The P category wants you to predict. What kind of information do you think you'll get from this topic? What do you think the authors purpose was? The L category is basically asking what you learned and how your predictions compared to the actual article.
Explanation:
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The reason why stars does not die when it is there time is because they tend to fuse in different and more heavier elements. In that way, it prevents them from dying for they were able to have the components of different elements, extending their lives and prevent themselves from dying on the time that they were supposed to.
Hydrogen,ammonia,methane,water
