Question

why is phosphorus a limiting factor in ecosystems? it is abundant in the atmosphere it is easily lost to the air it moves slowly through ecosystems it cycles quickly

Explanation:

Phosphorus is not abundant in the atmosphere. It doesn't cycle quickly. It is not easily lost to the air. Instead, it moves slowly through ecosystems, often limiting the growth of organisms as it is not readily available in sufficient amounts.

Answer:

It moves slowly through ecosystems