Answer:
According to this hypothesis, viruses evolved early in Earth's history from fundamental replicative molecules that formed in the “primordial soup” as the planet began cooling. These molecules also led to the evolution of cellular organisms—the viral hosts—either in parallel or at a later stage of evolution.
That would have been 3 or so billion years ago, early in earths history.
Answer:
Folded mountains are all those originated by movements and collisions of the great plates that form the earth's crust. Fault-block mountains are those that appear from a break in the crust, a fact that causes the rock blocks to move up and down and form elevations.
Explanation:
The parallel movement of the earth's crust leads to the appearance of Folded Mountains. According to this theory, Folded Mountains originate from the collision between two tectonic plates. Some of these plates are huge and can support and carry entire continents. When two plates collide, the denser one gets under the other, and this causes the sediments deposited in the basin or geosyncline that separated them to fold up. The large folds formed in the compressed sediment can break apart and form mountains. Fault-block Mountains are related to normal wide-angle faults that gradually decrease in dip with depth. Most of the Fault-block Mountains form in response to a large uplift.
In cell biology, an organelle is a specialized subunit within a cell that has a specific function. Individual organelles are usually separately enclosed within their own lipid bilayers. The name organelle comes from the idea that these structures are to cells what an organ is to the body (hence the name organelle, the suffix-elle being a diminutive).
Out of the following given choices;
a. fructose
b. glycogen
c. sucrose
d. starch
The answer is; B.
Glycogen is only found in animals, bacteria and some fungi. It is analogous to starch (amylopectin) in plants and is also made up of glucose and sucrose polymers. It is highly branched and compact in structure than starch. Glycogen is used as a storage reserve for excess glucose in animals and is stored mainly in the liver and muscles.
Answer:
earthquakes occur when the edges suddenly become unstuck and slip along a fault
Explanation:
