Answer: 4
Explanation: When an object is red-shifted, it means the object is rapidly moving away from you. Distant galaxies are red-shifted because they are rapidly expanding outwards away from you.
As water is neccesarry for human health it keeps water coming for us therefor it helps society by keeping it alive
Parasitismi think is the answer
Answer: a. An earlier start to spring.
Explanation: Notice that this is my opinion and might not be the correct answer! The growing season is the period of the year when crops and other plants grow successfully. And this season depends on warm temperatures, so if spring starts earlier, this adds warm time to the growing season.