If you're apart of K12 public online school and you're doing this lab report you can find the PDF for the common leaves sheet of the 10 leaves in 3.03 Dichotomous Key Investigation: Dichotomous Key under Materials then you just look at the example and instructions and fill out that way
I would say 4. To create a hypothesis, you would need some knowledge about what you're studying. This is where prior knowledge could come in handy.
Answer:
This is because in biology, energy is transferred from organism to organism and some energy is lost along the way. Each energy transfer results in a loss of energy, so that energy is always at a lower level and can never be returned to its original high energy level. On the other hand, chemical elements can form products, then that reaction can be reversed and break back down into reactants. Additionally, the law of conservation of matter says that matter can't be created or destroyed, only transferred from one form to another.
The answer is true because you cant live without water
