You can buy bottled gas to use for cooking. This gas is squeezed into a small space and is sold in containers that are very strong a Explain why the containers need to be very strong
b Explain why the containers are heavy.
its chemistry not geography i choose the wrong one!!

Answer

In order to hold any useful quantity of gas the gas needs to be highly pressurized. It pushes against the sides of the container trying to force it apart so the container has to be very strong. ... Gas cylinders are tested using a liquid - usually water under pressure

Explanation: I hope this helps and is the answer you are looking for.

it is very hard for the climatologists to precisely predict how will the global temperatures be changing so there's lots of models, some of which differ significantly, this is due to multiple factors, and probably the most important is the human activity.

humans have been a key factor in climate change around the globe since the start of the industrial revolution, and in the past few decades the consequences are becoming more obvious. there's lots of emission of pollutants in the atmosphere as well as changing the environment on the surface itself, so it's really hard to predict how will that go in the future because there's some countries that are reducing the damage and are going towards green energy, while others are stubbornly continuing with pollution and damages to the environment.