The answer is B. Bacteria in the plant nodules convert nitrogen from the soil into molecules the plants can use.
Answer:
A-Z
Explanation:
A proton has an estimated weight of 1.
Answer:
Explanation:
To calculate the angle of refraction you can use Snell's law:
With what we have:
Calculate the number of neutrons. Now you know that atomic number = number of protons, and mass number = number of protons + number of neutrons. To find the number of neutrons in an element, subtract the atomic number from the mass number.