Which characteristic of a pine tree is an adaptation to the climate of the northwestern coniferous forests?

Conical shape

Explanation:

The conical shape of the pines is an adaptation to the freezing climate of the northwestern coniferous forests. The conical shape of these trees, with the branches pointing downwards, prevents snow from accumulating and damaging the branches and leaves. The leaves are coated with a resin that protects your fabrics from the cold and helps maintain moisture and heat. Another adaptation is the small size of the leaves, reducing water loss through perspiration.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.