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Frequent mowing puts poisonous weed into survival mode

A study has found that frequent mowing of Solanum elaeagnifolium, also known as silverleaf nightshade, may help create a superweed. A professor of entomology and plant pathology has been studying silverleaf nightshade for more than a decade. New findings have shown that the more silverleaf nightshade was mowed, the more it developed ways to avoid destruction. The taproot went down further, nearly 5 feet deep, in the first generation of mowed plants. More spikes popped out on the stem as a defense against caterpillars feeding on the flowers. The flowers became more toxic to caterpillars, leading to less pressure from natural predators.

Infanticide Or Adoption? Why Parrots Kill Or Care For Each Other s Chicks

Infanticide Or Adoption? Why Parrots Kill Or Care For Each Other s Chicks
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