What is a homogeneous mixture of two or more liquids called when they are normally not mixable and need a third substance to them mix together? colloid emulsion solution compound

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?

How does a gymnosperm prevent itself from pollinating the same tree