Sandra puts some pill bugs into an open box. She covers half the box with a piece of cardboard. She then places the box outside on a summer day, and all the pill bugs move under the cardboard. The pill bugs are most likely responding to which of the following? OPTIONS:
- air pressure
- bright light
- wind
- fog
A: bright light

Which habitat on Earth would probably 28 add the greatest amount of water to the water cycle through evaporation? OPTIONS:
- cold lake
- desert sand
- warm ocean
- mountain rock
A: warm ocean

In flowering plants, what structure containing DNA is transported from one plant to another? OPTIONS:
- nectar
- chlorophyll
- glucose
- pollen
A: pollen

Paper chromatography is a process used to separate mixtures of substances into their components. The components are carried by a mobile phase through a stationary phase made of absorbent paper. An investigation analyzed a sample of black ink to determine its components.Which property allows the components to separate? OPTIONS:
- the solubility of the components in the mobile phase
- the evaporation rate of the components at a certain temperature
- the magnetic property of the components
- the thickness of the paper used as the stationary phase
A:
the solubility of the components in the mobile phase