Amazon rain forest?

Question

i am looking for interesting facts on environmental changes to the rainforest. how it has changed over the years. Any one with any interesting facts plz drop me a line thanks!

Answer 1

I'm not sure if you mean by over the years since the rainforests began or since humans dominated the planet, so I will explore both. The following is a quote, which I have read fully and understood, but a quote:

"About 420 million years ago, during the Silurian Period, ancient plants and arthropods began to occupy the land. Over the millions of years that followed, these land colonizers developed and adapted to their new habitat. The first forests were dominated by giant horsetails, club mosses, and ferns that stood up to 40 feet tall.

"Life on Earth continued to evolve, and in the late Paleozoic, gymnosperms appeared. By the Triassic Period (245-208 mya), gymnosperms dominated the Earth's forests. In the Cretaceous Period (144-65m mya), the first flowering plants (angiosperms) appeared. They evolved together with insects, birds, and mammals and radiated rapidly, dominating the landscape by the end of the Period. The landscape changed again during the Pleistocene Ice Ages — the surface of the planet that had been dominated by tropical forests for millions of years changed, and temperate forests spread in the Northern Hemisphere."

As for human domination this has resulted in deforestation, overexploitation of various plants that are harvested for medicinal, religious, clothing, or any other human purposes. Taking of its animals or fauna as the scientists call it. The flora and fauna is exploited resulting in their destruction. It has gotten much smaller and cannot absorb as much heat or solar radiation as it once did because there is not as much of it. It cannot cleanse the air as well and so on.