It disappeared somewhere around 15000 years ago. This has probably something to do with rising sea levels as the ice age ended and the melting ice flooded lowlying land.

The last step is percolation. Percolation is when the water on the surface of the Earth

seeps down underground. It later forms aquifers in the lowlying regions.

The fenland region around Boston is suitable for arable farming due to its fertile soil, flat topography, and ample water supply from drainage systems and rivers like the River Witham. The historical practice of draining the fens has made the land more productive for crops such as grains and vegetables. The mild climate in the area also contributes to its agricultural productivity.

It will affect the animals and plants.

...

CO2 and methane are building up in the atmosphere, and they are acting like a blanket around the Earth, stopping heat energy from the Sun escaping back into space. The temperature rie is about 0.06 C every 10 years, but enough to cause quite large changes in the Earth's climate.

One effect is an increase in severe and unpredictable weather, some people think that very high winds and extensive flooding is an example of this.

The ice caps at the north and south poles are also melting, this causes sea levels to rise, this will mean more lowlying shores will flood, for countries everywhere.

This will eventually mean that parts of or even whole countries will be submerged.

Hope this helps,

:) x

Because not only are they endangered compared to a lot of other semi tropical/tropical flora, but they're a vital part of the prevention of beach erosion. The roots hold the soil/sand in place along beach shores.

A while back, it was not thought that they were important, because a Plant native to Brazil call the "Brazilian pepper tree" was almost the same thing and could grow along shorelines of salt water also, but in recent years it has been discovered that Brazilian pepper is a nuisance. Not only is it poisonous, but its destructive and illegal to plant now because of it.