What is the main source of downward convection<span> flow in the mantle called? The downward sliding characteristic of ridge-push is the result of what? </span>What causes<span> the </span>thermal convection that drives plate motion<span>? Is it the downward arm of convective flow in the mantle?
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</span>The heat driving<span> mantle </span>convection<span> has three sources. "Primordial" </span>heat<span> (left over from the accretion and differentiation that led to the formation of Earth's core) contributes 20 to 50% of the </span>heat<span>. ... Mantle </span>convection<span> is the main mechanism by which this </span>heat<span> escapes from the interior of Earth.
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Answer:
common ancestor
Explanation:
A single specie from which other organisms have descended is called a common ancestor.
All descendants which are further generations can trace their origin from this ancestor.
- Two or more descendants can trace their origin to an ancestor.
- Most times, in a family tree, the common ancestor is usually placed on top.
- Several descendants can have just a single ancestor.
Corticosteroids
<span>Corticosteroids are hormone produced by the body or pharmaceutically
manufactured, used for the variety of inflammatory and non-inflammatory
conditions such as arthritis, allergic reactions, asthma, skin rashes. However,
the use of Corticosteroids help to regulate autoimmune activity and they act by
as immune inhibitors by suppressing autoimmune attacks which are caused by
inflammation in rheumatoid arthritis.</span>
Dolly was a first mammal cloned from an adult somatic cell, she was a domestic sheep, using the process of nuclear transfer. Dolly showed that genes in the nucleus of such a mature differentiated somatic cell are still capable of reverting to an embryonic totipotent state.
The totipotent cell is a cell that can form all the cell types in the body, it has an ability of a single cell to produce and divide all of the differentiated cells in an organism.
