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.
True
Explanation:
An unconformity between two parallel layers of sedimentary rocks is classified as a disconformity.
A disconformity is a type of unconformity.
An unconformity is a significant break in the stratigraphic record of a formation. There are different types of unconformity;
- A disconformity is an unconformity between parallel layers of sedimentary rocks.
- A non-conformity is an unconformity between two different rock types.
- A para-conformity is an unconformity between two parallels layers marked by differences in fossil age.
- An angular unconformity is an unconformity between two layers that are at an angle to one another.
The main cause of unconformity is usually non-deposition and erosion.
learn more:
Sedimentary rocks brainly.com/question/9131992
#learnwithBrainly
Answer:
Timbuktu
Explanation:
It became part of the Mali Empire early in the 14th century. In the first half of the 15th century, the Tuareg tribes took control of the city for a short period until the expanding Songhai Empire absorbed the city in 1468. A Moroccan army defeated the Songhai in 1591 and made Timbuktu, rather than Gao, their capital.
