4 Written questions
3 Multiple choice questions
- maintaining a balance of water between organisms & their surroundings.
- when moisture levels reach a point at which plants can no longer extract water.
- ion that carries a positive charge.
3 True/False questions
horizon → ion that carries a positive charge.
leaching → ion that carries a positive charge.
mechanical weathering → the presence of water, oxygen, & acids that reforms the makeup of rocks.