Answer:
When cells split and increase they do this very important thing in order tonmake the new cells exactly the same as the previous before them. Each cell makes more of all it's genes. Then each one.splits into two with one group of genes in each one of the new cells. During the process they make sure that all are copied correctly.
The moon is a satellite because it moves around Earth. Earth and the moon are called "natural" satellites. Satellites fly high in the sky, so they can see large areas of Earth at one time.
Earth is a satellite of the Sun and the Moon is a sub-satellite orbiting Earth.If the Moon somehow ended up outside Earth's Hill sphere, the Moon would orbit the Sun instead of the Earth just like all the other planets, asteroids, and comets.
Have a good day at school!
Answer: Thyroxine
Explanation:
Thyroxine, a thyroidal hormone (produced by the thyroid gland) bind directly with the specific receptor proteins present in the nuclear chromatin (found in the nucleus) and enhance RNA and the enzyme synthesis necessary for the control of body metabolism
Uhm... I believe you mean a situation when we examine a relation between two variables. In this case all other conditions must remain as constant as possible because they could affect a result and then the conclusions could be false. ie. you examine a relation between temperature and frequency of cell division/organism's activity, then you should stabilize air pressure, food composition, bacterial flora in experimental room... etc. of course when you conduct research in a field, ie. ecological research you can't do any of that but then you are obliged to explain possible aberrations of your results in an article's discussion.