Answer:
Continental drift in terms of plate tectonics.
Explanation:
- Continental drift is a theory given to explain the formation of various plates or slabs on the surface of the earth and the theory is evident in the form of Alfred Wegener as a geologist who through his research and discoveries and advanced knowledge gave the concept.
- Plates on which the landmasses and various features are made is not static as it looks and is more dynamic and was more destructive in the past as the formation of the earth during the 4.6 billion years ago the continental landmass underwent transformations and breakthrough happened as the split and rejoined and again joined to form what is seen today.
- These plates drifted in such ways that the landmasses formed various properties of the northern and southern hemispheres. Wegener gave evidence of Jigsaw fit puzzle, drifting of the climatic zones, spreading of the plants and animals located at the same continental borders.
- Moving of the plates under the action of gravity and wind speeds.
Vegetative Propagation.
Vegetative propagation is technique through which plants reproduction takes place in an asexual way. This is usually done by cutting a stem of a plant and to reproduce another plant from the existing one. This can also be done via sexual means.
The advantages of growing of fruits and vegetables by using vegetative propagation are many. The biggest benefit is if we have a plant of a desirable trait, that same plant can be used again and again to reproduce fruits and vegetables. Vegetative propagation is also treated as cloning method.
Answer:
Perestroika under Soviet leader Mikhail Gorbachev´s rule was:
a. restructuring of the planned centralized economy,
Explanation:
It was an attempt to reform the socialist command economy in the 1980s, its lack of economic and entrepreneurial incentives, an attempt to stimulate innovation and overcome stagnation. It didn´t reach its goals and led to unrest in the Soviet Union.
