Plants need nitrogen in order to grow. Nitrogen is abundant in the earth's atmosphere, but plants cannot use it in that particular form (nitrogen gas). Certain bacteria which reside on some plant roots are able to change atmospheric nitrogen into a form that plants can use (ammonia).
Answer: By losing its two outermost electron
Explanation:
Calcium is a element that belongs to group 2 in the periodic table. It has an atomic number of 20, and an electronic configuration of 2, 8, 8, 2.
Hence, to form an octet structure, it gives off its two electrons as shown below:
Ca <----> Ca2+ + 2e-
Thus, by losing its two outermost electrons, a positively charged calcium ion (Ca2+) is formed
Answer:
Metaphase II or Metafase II
Explanation:
Answer: decrease
The temperature at which the air needs to be cooled down at constant pressure, the water content reaches saturation is called as dew point. At this point the the relative humidity of air is 100%. The air cools to form liquid water. In the dew point the temperature of the air decreases so that the air cools down to form water in the form of dew.
