helpe me with mybio prac please? (1 Viewer)

[moniyoo]

What are the...
validity
reliability
accuracy

for the prac which they are..

1.The model, the process of the natural selections. (using red green toothpicks)
2. Protein synthesis ("block")
3. A model of Meiosis (using the blue and red ribbon)
4. Pentadactyl limb
5. genetic cross