The correct answer is b: cattle on rangeland. A point source of pollution occurs from a single identifiable and usually spatially narrow source. These sources of pollution are usually relatively easily to quantify and manage. In contrast, a non-point source of pollution, such as cattle on rangeland or irrigated agriculture, is variable on both spatial and temporal scales. These sources of pollution are difficult to quantify and manage.
Answer:
what ? u don't know how to answer that question sorry
Answer: atmosphere
Explanation: because the atmosphere is the air.
<span>The component that nitrogen-fixing bacteria provide and that plants can absorb is soluble nitrates. Since plants cannot directly use nitrogen gas, it must be converted into its soluble form. Plants cannot do this either, but nitrogen-fixing bacteria can. These bacteria convert nitrogen gas into soluble nitrates, such as ammonium, which plants can absorb.</span>
