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Certain chemicals and radiation in the environment can cause a reaction or mutation in an organism. Such changes may alter organisms genotype or phenotype. Chemicals that induce changes in organisms DNA is called mutagens.
Niche
That depends on the animal and the environment. Each animal has its own set of characteristics which suit it to its environment. For example, a dolphin has certain characteristics which make it well suited to live in the ocean, rather than on land. Similarly, a gorilla has certain characteristics which make it well suited to live on land rather than in the sea.
They either enable a certain chemical pathway or lower the activation energy of a chemical pathway. More specifically they adhere to a particular molecule through minor bond forces and stretch it in such a way that certain internal bonds are stressed or terminal groups are more extremely presented to attack by other reactants.
they cannot be manufactured by the organism
a niche
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The skin is the boundary which separates an organism from its environment. But this barrier that keeps you on the inside and the germs on the outside must also allow certain exchanges between the organism and the environment, for survival.
A organism with traits that are suited to a certain environment have a better chance of surviving than organisms who's traits are not suited for the environment.
A niche is the role an organism has in the environment . for example some organism's niche is to hunt and kill certain animals and that balances the population within the ecosystem .
Certain chemicals and radiation in the environment can cause a reaction or mutation in an organism. Such changes may alter organisms genotype or phenotype. Chemicals that induce changes in organisms DNA is called mutagens.
Perception is a process by which an organism recieve certain information about environment. Perception is always based on sensation.
Certain animals adapt to certain environment by certain beneficial and natural traits or features in them and thus the environment gradually becomes its natural habitat. This particular features are in much excess in Homo Sapiens than other organisms and so it is probably believed that by virtue of these features they have overcame the adverse situations perpetrated from the changing weather and climatic conditions. This can be best understood if you read the " The Evolution Of Species" which is a famous book written by an environmentalist, Charles Darwin by framing the experiences of his travel in his ship DMS Beagle.
influence the expression of certain genes
Niche
The composition of the soil effects the environment because certain types of soil are not conducive to vegetation and trees growing which effects the environment in ways of oxygen in the air in that area.
The composition of the soil effects the environment because certain types of soil are not conducive to vegetation and trees growing which effects the environment in ways of oxygen in the air in that area.