More than 60 million years
Many scientists think the sun and the rest of the solar system formed from a giant, rotating cloud of gas and dust known as the solar nebula. As the nebula collapsed because of its gravity, it spun faster and flattened into a disk. Most of the material was pulled toward the center to form the sun.
In my opinion, I find it better to consume local products rather than global products. I say this because I believe it’s good to support your local community instead of a global company that’s already big. Local products are probably less transported into places meaning there is a low risk of it being infectious.
They closely resemble the Greek columns
Answer:
The heat equation can be written as. ∂ u ∂ t = α ∇ 2 u. where u(x, y, t) is the temperature field that varies in space and time, and α is the thermal diffusivity constant.
