Question

Which statement about Homeostasis is incorrect?

1.because of this, the fluctuations of the internal environment are of extremely narrow range as compared to that of the external environment

2.there is a definite control system regulating the homeostatic activities

3.homeostatic mechanisms keep the internal environment fixed despite wide changes in the external environment

4.all the above​

Answer 1

*1)* The different components (either elements or compounds or both) of a homogenous mixture are uniformly distributed over the mixture but are not chemically combined with each other.

On the other hand, a compound consists of atoms of two or more elements having chemical bonds between them.

*2)* Any mixture (whether homogenous or heterogeneous) doesn't have fixed melting point or boiling point.

While compounds have fixed melting and boiling points.

*3)* Mixtures don't have their chemical formula while compounds have their chemical formula.