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Around 30,000. Around 140. Around 29,960. Around 40.
killing parasites. inoculation. killing insects. improving growing conditions.
Bel≤Pl Bel＜Pl Bel≥Pl Bel＞Pl
Some plant diseases may be caused by bacteria. Some plant diseases may be caused by pathogens. Some plant diseases may be caused by fungus. Symptoms are always helpful in identifying diseases.
Some plant diseases may be caused by bacteria. Some plant diseases may be caused by pathogens. Some plant diseases may be caused by fungus. Symptoms are always helpful in identifying diseases.
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Some plant diseases may be caused by bacteria. Some plant diseases may be caused by pathogens. Some plant diseases may be caused by fungus. Symptoms are always helpful in identifying diseases.
Some plants have relative immunity to a great many diseases, while others have a susceptibility to them. The tolerance of a particular plant changes as the growing conditions change. A blight killed virtually every chestnut tree in North America. A blight may be a national infection.
Some plants have relative immunity to a great many diseases, while others have a susceptibility to them. The tolerance of a particular plant changes as the growing conditions change. A blight killed virtually every chestnut tree in North America. A blight may be a national infection.
A world war. Border conflicts. Rations of grain and meat. Social upheavals.
killing parasites inoculation killing insects improving growing conditions
Around 30,000. Around 140. Around 29,960. Around 40.
买入PL，卖出PH 买入PL，买入PH 卖出PL，卖出PH 卖出PL，买入PH
PL／PK －PL／PK PK／PL －PK／PL。
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