<span>The distinct evidence of climate change in the O’Higgins glacier is proven by the measurement of the area that it covers. About 11.5 kilometers of glacier land has melted within the twentieth century. Satellite images reveal the retreat of glaciers where they compared early 1900s images from the present.
</span>
Answer:
It will eventually become unsustainable because of factors like food, water, space, etc.
The answer is seeds and pollen. They allow for the free dispersion of plants in terrestrial environments hence allowing plants colonize new habitats. Additionally, the seeds and pollen can remain dormant for a period of time and sprout only in favourable conditions for plant growth