Question

How can scientists determine if a building safe crossing structures benefit the biodiversity in the area? Select all that apply.
A. set up cameras to see if animals are using them
B. compare populations before and after
C. use structures that are successful elsewhere
D. measure to see if they are big enough for animals
• A. set up cameras to see if animals are using them
• D. measure to see if they are big enough for animals
• C. use structures that are successful elsewhere
• B. compare populations before and after

Answer 1

All four options can contribute to determining if building safe crossing structures benefits biodiversity in the area. Here's how each approach is relevant:

A. **Set up cameras to see if animals are using them** - This method provides direct evidence of animal usage of the crossing structures, helping to assess their effectiveness.

B. **Compare populations before and after** - This comparative approach can reveal shifts in biodiversity metrics, helping to identify any positive or negative impacts resulting from the construction of the crossing structures.

C. **Use structures that are successful elsewhere** - Drawing on successful designs from other locations can increase the likelihood of a positive impact, helping to establish best practices for the area in question.

D. **Measure to see if they are big enough for animals** - Ensuring that the structures are appropriately sized for the target animal species is critical for functionality and utility, thereby affecting their impact on biodiversity.

Therefore, all options A, B, C, and D are valid and relevant methods for assessing the impact of safe crossing structures on local biodiversity.