<span>When the surface layer was dug up, the permafrost was exposed. When the weather warmed, this exposed permafrost would have melted and become soggy, causing the ground underneath the tracks to shift.</span>
Answer:
algae - crown pls
Explanation:
algae because if there wasnt algae the food chain wouldnt survive
Answer:
it's may be genetic.
<h2>hope it helps.</h2><h2>stay safe healthy and happy.</h2>
D is the ion found in water
