首字母填空Every living thing contains a special clock.This clock

首字母填空
Every living thing contains a special clock.This clock keeps time with what's happening in the outside world.At London"s Natural History Museum there is a new exhibition called Rhythms of Life.The exhibition shows how nature's clocks---things like day and night,summer and winnter---affect the whole l_____ world ---including!For example,you can discover how sunflower are i____
by a daily clock.During daylight,these plants open their flowers and try to face the sun in order to get energy from it,while at night sunflowers close up c_____!
Many animals grow winter coats to protect t____ from cold winters.Sometimes these extra fur or feathers can be turned into different colours.The mountain hare in Northern E_____ and Asia has a brown coat in the summer but in the winnter its fur turns white,the same colour as the snow.So its enemy can't find it easily.
We human beings go through cycles too.Each autumn usually get fatter to stay warm during the cold winter.When c_____ are born they have no rhythm at all.---they may sleep during the day and wake at night.But soon,about 30 weeks later,they begin to sleep more at night and stay a_____ during the day.Getting into the normal cycle is a natural part of the growing up.