According to some botanists, invasive plants are the second most serious threat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems.
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Athreat, after habitat loss, to native species of plants and animals and to the maintenance of biologically diverse ecosystems
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Bthreat, after habitat loss, to native species of plants and animals and for maintaining biologically diverse ecosystems
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Cthreat, after losing their habitat, to native species of plants and animals and also to maintenance of biologically diverse ecosystems
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Dthreat to native species of plants and animals and for maintaining biologically diverse ecosystems, after habitat loss
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Ethreat to native species of plants and animals as well as to maintaining biologically diverse ecosystems, after losing their habitat
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正确答案: A