Answer:
is defined as the group in an experiment or study that does not receive treatment by the researchers and is then used as a benchmark to measure how the other tested subjects do.
Climate is defined as the weather condition that is measured over a time period of 30 years for a particular region and for a period of time. Climate of a region depends upon several factors such as pattern of temperature, rate of precipitation, humidity, wind direction and seasons. Various types of instruments are used to determine the climatic condition of a particular region as it depends on several factors, these instruments are:
Barometer is used to measure the atmospheric pressure of the region.
Wind Vane is used to show the direction of the wind.
Rain Gauge is used to measure the amount of precipitation over a period of time.
Snow gauge is used to measure solid precipitation
Hygrometer is used to measure the relative humidity.
C) global warming
explanation-
The comparison between a known measurement and a measurement acquired by using a tool.
