It is B and I know it because I am in college and I already know about this question so your welcome for helping put
Your spinal cord works like a Telephone wire, sending messages back and forth between your body and your brain.
The question was incomplete as the diagram was missing, however, the correct diagram is attached with the answer -
Answer:
The correct answer is - scale
Explanation:
The thermometer used to measure temperature by comparison of the object or the parameter of the temperature to measure, with a calibrated pattern that is called scale.
A Thermometer has two scales on both left and right side: degrees Celsius on the left and degrees Fahrenheit on the right.
As given in diagram label with "A'' in a circle on the left side is The degrees of the scale.
The density of a population of living organisms is usually measured in individuals on one square km. In here we have 50 earthworms on an area of 5 square meters, thus we have 10 earthworms on every square meter. In order to get to the result we need to see first how many square meters there are in one square km. One square km has one thousand meters of length and one thousand meters of width so:
1,000 x 1,000 = 1,000,000 km²
Since we established that we have 10 earthworms on every one square meter, we just need to multiply the number of square meters with the amount of earthworms on every square meter:
1,000,000 x 10 = 10,000,000
So we have a density of 10 million earthworms per square km.
