In recent decades, season creep which means that many phenological signs of spring are occurring earlier in many regions by a couple of days per decade. а) has been observed б) has observed в) was observed г) is observed

Воронбец Воронбец    2   26.08.2019 17:10    1

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Pmogi111 Pmogi111  26.08.2020 10:27
А) has been observed
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