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Evolutionary imbalance hypothesis: On invasive species, Darwin had it right all along, study shows

Evolutionary imbalance hypothesis: On invasive species, Darwin had it right all along, study shows

An iceplant, from a region of high diversity in South Africa, is overtopping and killing a native shrub on the New Zealand coast, a region with far less diversity. Plant lines that have had to struggle against robust competition are strong invaders in areas where native plants have had an easier time. Credit: Jason Fridley […]

Cum sa circulam corect pe bicicleta?

Cum sa circulam corect pe bicicleta?

Pe zi ce trece, bicicleta castiga tot mai multi adepti, insa, indiferent de varsta, aceasta trebuie utilizata corect, in spiritul conduitei preventive. Ca urmare a lipsei de precautie, tot mai multi biciclisti cad victime ale accidentelor de circulatie. Nesemnalizarea si neasigurarea inainte de efectuarea schimbarii directiei de mers, in special spre stanga si la plecarea […]