I am teacher. So I wish to my students to stay home and safe himself with your families.
Tuesday, December 10, 2019
Grandmother killer whales boost calves' survival, study finds
The survival chances of young orca whales are boosted by the presence of their grandmothers, especially in times of food scarcity, according to new research that offers a clue as to the evolutionary purpose of menopause.
from CNN.com - RSS Channel - Regions - Asia https://ift.tt/3594eLZ
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