Spring 2023 https://www.globe.gov/c/message_boards/find_thread?p_l_id=18703103&threadId=104160492 2026-04-04T04:56:21Z 2026-04-04T04:56:21Z Snježana Marković-Zoraja https://www.globe.gov/c/message_boards/find_message?p_l_id=18703103&messageId=104160491 2023-03-31T21:07:35Z 2023-03-31T21:07:35Z

Hi from Dubovac Primary school, Karlovac, Croatia!<br />We continue observing two birches (Betula pendula L)<br />The leaves grows fast.<br />Observation on March 22nd,    curent air temperature: 20C<br />Birch 1.<br />Leaf 1. 10 mm, leaf 2. 9 mm, leaf 3.  9 mm, leaf 4.  8 mm<br />Birch 2.<br />Leaf 1. 12 mm, leaf 2. 14 mm, leaf 3.  12 mm, leaf 4.  13 mm<br /><br />Observation on March 30th,   current air temperature: 19 C<br />Birch 1.<br />Leaf 1. 20 mm, leaf 2. 18 mm, leaf 3.  17 mm, leaf 4.  17 mm<br />Birch 2.<br />Leaf 1. 25 mm, leaf 2. 27 mm, leaf 3.  24mm, leaf 4.  25mm<br /><img src="https://www.globe.gov/documents/18702582/0/Birch+a.30.3.jpg/7de15796-706e-787b-4188-2a37b9c97e9c?t=1680296819550&amp;imagePreview=1" />

Snježana Marković-Zoraja 2023-03-31T21:07:35Z