Choice of Words:They refers to satellites. Track means to follow or monitor something.
Alternative Expressions
They monitor the weather.
Meaning: This means that a group of people or things are keeping an eye on the atmosphere and watching for any changes, such as changes in temperature, humidity, wind speed, or precipitation.
Choice of Words:They refers to a group of people or things. Monitor means to watch or check something regularly to make sure it is working properly or to observe changes. Weather refers to the condition of the atmosphere at a particular time and place. When you put them together, "They monitor the weather" means that a group of people or things are watching and checking the changes in the atmosphere.
They study the weather.
Meaning: This means that a group of people or things are trying to understand the atmosphere and how it works, by observing it, doing experiments, and reading about it.
Choice of Words:They refers to a group of people or things. Study means to learn about something by reading, observing, or experimenting. Weather refers to the condition of the atmosphere at a particular time and place. When you put them together, "They study the weather" means that a group of people or things are learning about the atmosphere and how it changes.