Answer:
The correct answer is 1. EEG.
EEG or electroencephalography is a technique used to measure the electrical activity of the brain.
8 to 16 pairs of electrodes are placed on the scalp which record the electrical activity or impulses (in volts) generated by thousands of neurons or nerve cells present in the brain.
It provides the real-time imaging of the electrical activity of the brain.
The recorded impulses are first sent to the amplifier as the magnitude of the brain's electrical impulses is very low.
The amplifier then amplifies the results and show it on the screen in the form of voltage units.
So Global warming is the rise in global temperatures due mainly to the increasing concentrations of greenhouse gases in the atmosphere.
Climate change is the increasing changes in the measures of climate over a long period of time.
This includes : precipitation, temperature, and wind patterns.
Hopes this helps :)
Answer:
down syndrome
Explanation:
people with down syndrome have an extra chromosome in the twenty-first pair
