Birds have feathers of different colors.
There are only 400 Siberian Lynx left in the wild.
There are 75 different kinds of cells in the body.
There are over a million different species in the jungles of Africa.
Changes occurred over a short period of time.
The birds on different islands have different food sources.
Conscious decisions let certain finches survive.
Some finches nest on rocks.
Soil 1 and Soil 2 are the same
The fertilizer has a greater effect in Soil 1
The fertilizer has a greater effect in Soil 2
Soil 1 absorbed more fertilizer than Soil 2
A diagram of a plant cell
A Styrofoam solar system made by a 6th-grade science student
A 3-D computer image of an atom
A data table from a plant-growth experiment
Parasitism between species.
Primary succession between species.
Predation between species.
Competition between species.
To use oxygen to produce glucose
To take in excess water
To use carbon dioxide to produce glucose
To feed on herbivores