The macromolecular colloids a) consists of aggregates of atom or molecules which generally have diameter less than 1nm.
b) have usual lyophobic character
c) have molecules which are flexible and can take any shape
d) have molecules containing both lyophilic and lyophobic groups.
[It has more than one correct answer]

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

How can one make a supersaturated solution? (apex)