The tundra has little variation in temperatures
Consider the nest to be (0,0)
The bird first flew 40 km (20x2) up and then 45km (15x3) left
So the final coordinates would be (40, -45)
Answer:
stationary
Explanation:
It's called a stationary front because the gases remain stationary next to each other because neither is strong enough to replace another.
This would impact the food chain. The smallest disruption causes drastic changes within an ecosystem.
Possibly the ability to emit sound that will bounce back to them, similar to that if bats, and allow them to locate prey.