Due to global warming, some tree species bud and develop fruits earlier in the spring than before. in response, some bird populations that migrate to reach this food source start their spring migrations earlier in the year. how might a gradual climate change cause a population of birds to stop migrating altogether?

It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? the arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced , similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s .

How water is moving through the ecosystem ?

Several billion years ago which gas was the least prevailant in the atmosphere