They help and cure the sick.
Doctors / nurses
When you divide the trash in different bags according the material it's made of.
Recycle / Recycling
This widely known resource was born in January 1 of 1983 and very few people had access to it.
These days, almost everyone has access to it and now you can even buy products on it !
Internet
It is quite the recent invention; people use it when they exercise to keep track of their progress.
Smart watch
They put out fires and help people that are going through a difficult situation like accidents.
Firefighters
When you put away clothes / objects you no longer need instead of throwing them in the trash.
Donate / donating
During the first half of the 20th century many people did this and even up to half of the population of industrialized countries did this because it was advertised as "cool".
These days however, it is no longer seen as something "cool" to do since we now know it might get people really sick.
Smoking.
There are several of these that you can download to your smart devices to help you keep track of things.
Apps.
They help people that have very little; sometimes help people that don't have a home or don't have money to buy food.
Charity workers / social workers
When you want to help those in need or you want to do something reward for others.
Volunteer / volunteering
The access to this kind of food is oftentimes very easy and cheap. This leads to some people to have health issues like obesity.
Fast food / Junk food
This technology lets you link multiple devices owned by you so they can function at the same time. ( It is not the internet )
Bluetooth
Their inventions and discoveries have helped people through history up until today.
Scientists
When you want to help people learn something new or to have them learn a new skill.
Teach / teaching
At the end of the 1800's (Eighteen Hundreds) it was primarily used to contact ships that were out at sea. Back then they way of communicating long distance was through morse code unlike these days that we can even listen to music when tuning in.
Radio
These type of objects help you move around and these days they don't even need gasoline (gas) to move around since you can charge them at home.
Electric cars / electric vehicles.
They help people in their time of physical recovery after an accident or a surgery.
Physiotherapists.
The act of when you want to thank someone for something they have done for you before or just because they are important to you.
Showing appreciation
In the near future some jobs might be replaced by these man made devices.
Robots
It simulates human intelligence in machines. It used to be confined to science fiction. But in recent decades, it's broken into the real world, becoming one of the most important technologies of our time.
Artificial intelligence.