Answer 1
Two broad processes that make evolution possible are 1 : directional forces including mutation , migration and selection and 2: nondirectional forces that include random genetic drift , bottleneck effect , founders effect ,and chance variations .
Answer 2
Evolution is most commonly described as a combination of reproductive variation and differential reproductive success.
Reproductive variation in itself is a "non-directional" phenomenon, that produces mostly random variations. Differential reproductive success (or: natural selection) is a "directional" phenomenon, that basically acts as a mechanism limiting the set of "directions" produced by random variation.
1. different breeding 2. evolution 3.adaptation
1. Evolution did occur. 2. The evolutionary changes were gradual, taking from thousands of years to millions of years. 3. The primary mechanism for evolution was natural selection. 4. The millions of species existing today branched out from a single organism through a process called speciation. 1. Evolution did occur. 2. The evolutionary changes were gradual, taking from thousands of years to millions of years. 3. The primary mechanism for evolution was natural selection. 4. The millions of species existing today branched out from a single organism through a process called speciation.
The four steps of natural selection are- Overproduction- Variation- inherited Variations- Natural Selection
Darwin considered evolution to be caused due to : 1)small changes/variations that occured 2)these variations were directed specifically towards adapting to the environment(directional) 3)evolution was a slow process De Vries believed that evolution occured by: 1)large changes that occured 2)these changes were mutations and were stochastic or random, not directional 3)evolution occured in fits and starts and was not a slow ongoing process
Both establish that: 1. There are limited reproductive opportunities 2. Only those organisms with "favorable" traits will be allowed to reproduce and pass the traits onto their offspring The difference is that artificial selection involves human intervention
alcohol and the theory of evolution
These four factors can effect ways evolution occur: 1.) Mutation 2.) Selection3.) Gene Flow4.) Genetic Drift
1. different breeding 2. evolution 3.adaptation
growth and repair can occur
A noise and something for it to bounce off of
Two substances necessary for combustion to occur are fuel (such as wood, gas, or oil) and oxygen. The fuel provides the energy source, while oxygen acts as the oxidizer that allows the fuel to burn.
Work is done when a force is applied to an object, causing it to move in the direction of the force. Both force and displacement in the direction of the force are necessary for work to be done.
Movement and heat production .
For metamorphism of rock to occur temperature and pressure must increase. Rocks created in this manner are called metamorphic rocks.
There won't actually be a dragonball evolution 2.
Because the 1st Dragonball Evolution sucked!
1. Reduced employment 2. Reduced productivity 3. Reduced prices