To provide an accurate answer, I would need specific information about which trees or event you are referring to, as there are many instances of trees being covered up for various reasons throughout history. If you can clarify the context or the specific event, I can give you a more precise answer.
the saxons and vickings and kings --- Forest covered most of Britain 1000 years ago.
42 years ago
fourscore and seven years ago means 87 years ago
2000 years ago
239 years ago.
Oxygen has came from trees many years ago.
trees
Zero. The current best estimate for the age of the universe is 13.75 billion years. The first trees are thought to date from the Carboniferous, approximately 359 - 299 million years ago. As such, 400 billion years ago (roughly 1300 times older than the estimated point when trees first appeared on Earth and approximately 23 times older than the age of the universe) it is VERY unlikely that there were any trees at all.
There were many plants 400 million years ago. Many of them were very large compared to modern plants. There were trees, cactus, and ferns, to name a few.
Sorry, I'm not really sure about this. Ta-da!
The last ice age peaked around 20,000 years ago. It was a period of extensive glaciation when large portions of Earth's surface were covered in ice sheets.
Well, 50 years ago 14% of the earth was covered in rainforests - all around the equator. But 100 years ago it was not destroyed at all - it probably just completely covered the whole equator!
about 1000,00 years ago
Approximately 200 years ago, there were over 7 billion acres of tropical rainforest around the world, which covered about 12 percent of the planet's surface.
The terrain In MichiganÊ2,000 years ago wasn't much different than present. There were many more forest and wooded areas and these were inhabited by theÊHopewell Indian tribes.
Trees have existed for about 300 million years in their many forms. The present ice age only started about 2.6 million years ago, so the answer is yes, they did.
Yes about 350 million years ago scientists expect that the world was 97% under water for many years.