Answer:E stabilization pond
Explanation: if he lives in a tundra biome its mostly populated my swamps and ponds so that would be the most useful one.
Answer:
The last two options I'm pretty sure
Explanation:
Answer: If the sin 30° = 0.5, then the cos 60° = 0.5 (same as 1/2)
Respiration of carbon dioxide by plant roots can lead to the formation of carbonic acid which can chemically attack rocks and sediments and help to turn them into soils. There are a whole range of weathering processes at work near the surface of the soil, acting together to break down rocks and minerals to form soil.