Which of the following are characteristics of heterogeneous mixtures?

distinguishable components
evenly distributed components
particles too small to be seen with a microscope
components in varying proportions
particles that may settle

Are the earth's ocean floor and continents the same age geologically? why or why not?

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind