Answer:
Answers are in the image
Explanation:
I can't explain how to fill it out right now because i have to go. If i can edit later i will.
The Green Revolution provided B. An increase in the yield of crops forless-developed countries.
The mixing that occurs at the fall and spring turnover replenishes nutrients in the upper layer of water in a stratified lake (epilimnion) and increases the level of oxygen in the lower layer of water in a stratified lake (hypolimnion).
-10grade/week
Explanation:
Given parameters:
Initial grade = 95grade
Final grade = 65grade
Time = 3weeks
Unknown parameter:
Rate of change of grade = ?
Solution:
Rate is defined as the change of a quantity with time.
Rate of change of grade = 
Rate of change of grade =
= 
Rate of change of grade = -10grade/week
The rate of change of the student's grade is -10grade/week. It implies that the grade of the student reduces by 10unit per week.