Answer:
Number of bacteria required 
Explanation:
Given -
Size of each bacterium
micrometers long
These bacteria are arranged end to end.
The size of chain to be formed is equal to
centimetres
Let us say that in forming a chain of
centimetres nearly X number of individual bacterium are required.
hence, number of bacterium required to form
centimetres chain can be represented as

Number of bacteria required 
Answer:
batholiths
Explanation:
batholiths are large masses of rocks composed of granite formed deep in the earth crust and ejectable in a molten state.
Hope it helps.
Your right J is sexual reproduction, and K is asexual reproduction. But sexual reproduction requires the presences of a male and a female. But other asexual reproduction doesn't, and just requires sexual maturity. They produce offspring in the form of spores for example.