Answer:
They are microorganisms that are important in the nitrogen cycle as converters of soil ammonia to nitrates, compounds usable by plants.
Explanation:
Answer:
Option A, B, C
Explanation:
A wave’s highest part is called crest and the lowest part is called trough. The vertical length between the highest and lowest part of wave i.e crest and trough is called wave height. Hence option A is correct. Steepness of waves is defined as the ratio of height of wave to its length i.e wavelength. Hence option b is correct
And the steepness of wave should never exceed the ratio of
, if ration exceeds
the wave gets steep and finally breaks down
Hence, Option A, B, C are correct