Why do we have to consider carefully how we use land area? [Prof. Dr.-Ing. Andreas Pfennig]

More on this topic: https://oneminuteanswer.de/pfennig
https://www.scientists4future.org

We need land to produce food. But today around 9% of humanity is starving and at the Amazon woods are on fire (#1, #2). So, to feed all people, we need more arable land.
In the future we also want to avoid fossil resources. We can then use biofuels for aircrafts and ships (#3). Plastics should be bio-plastics (#4). 
Agriculture shall become more sustainable, but organic farming needs 15% more land area (#5). Also, more space should be given to biodiversity. 
According to the IPCC, we even have to remove carbon dioxide from the atmosphere to save the climate (#6). Here, afforestation can make a significant contribution (#7).
For all this we need more fertile land. But that does not exist. 
Yet agriculture has actually doubled its productivity in the last 40 years (#2). Unfortunately, the rapid growth of world population has - literally - eaten up much of this agricultural progress (#1).
Despite these increasing demands, agriculture can do all this for us. However, one prerequisite is that we stop eating animal-based food (#8, #9). This is because today we produce animals on 80% of our agricultural land, but they provide only 18% of our calories (#2). Animal production is thus extremely inefficient. Only if we avoid this inefficient production, we will have a chance to sustainably produce all we need for a good life for all people on this earth on the available land area (#10).

More on this topic:
#1 https://oneminuteanswer.de/pfennig-en#1
#2 https://oneminuteanswer.de/pfennig-en#2
#3 https://oneminuteanswer.de/pfennig-en#3
#4 https://oneminuteanswer.de/pfennig-en#4
#5 https://oneminuteanswer.de/pfennig-en#5
#6 https://oneminuteanswer.de/pfennig-en#6
#7 https://oneminuteanswer.de/pfennig-en#7
#8 https://oneminuteanswer.de/pfennig-en#8
#9 https://oneminuteanswer.de/pfennig-en#9
#10 https://oneminuteanswer.de/pfennig-en#10