They are in hibernation (冬眠) 【小题5】 In winter they eat nothing. They're very hungry when they wake up in spring. They usually look for food in March or April. Bears, snakes and frogs are such animals. Winter i
3). Low doses of cadmium increase growth rate in American toads (Bufo americanus, James and Little, 2003) and leopard frogs (Rana pipiens, Gross et al., 2007), and result in body size gains and faster metamorphic rates in Chinese toads (Bufo gargarizans, Ya et al., 2019). ...
" said Marco Biggiogera, a hibernation researcher at Italy's University of Pavia.Just like bears and frogs, the hibernation of human beings would cause a person's metabolism(新陈代谢)to lower
We call this hibernation(冬眠). Many animals like snakes, frogs and bears hibernate in winter. Many animals stay active in winter. Some animals ___ food in summer and autumn and eat it in winter. This is what squirrels (松鼠) do. Other animals ___ changes in their bodies or behavior....