Is climate change real? Why or why not?

It is spring season now. It is warmer than before maybe because of glova  global warming.

Spring flowers like cherry blossom are already gone.When my husband and I went to mountain today, we saw new green leaves grown up.

Temperature is higher than last spring.  

(04/14/21)

-난 빨리 달린다.

-I can run fast. -> I run fast. => Another way: Your sentence is okay and this is another way of saying it.

-넌 공부를 열심히 해야 해.

-you have to study hard. -> You should study hard. => Another way: Your sentence is okay and this is another way of saying it. (Capitalization)

-난 여기에 그렇게 오래 있지 않을 거야.

-I won't stay long here. -> I will not stay here that long. => Another way: Your sentence is okay and this is another way of saying it.