帮忙用英文回答几个问题 急
大概正确就行
1 how does a hypothesis help scentists understand the natural world?
2 distinguish between a variable and a control
3 what steps are involved in making a conclusion
4 why is publishing the design and results of an experiment considered an essential part of science
5 how are unicellular and multicellular organisms alike?how are they different?
6give an example ofchanges that occur during the life cycle of a multicellular organism