Food Type 1,600 Calories
Grains At least half of your servings should be whole-grain. 6 servings per day
Vegetables Eat a variety of colors and types 3-4 servings per day
Fruits Eat a variety of colors and types 4 servings per day
Fat-free or low-fat dairy Products 2-3 servings per day
B. The air you breathe.
Because the rest of the choices are not environmental factors. Gang activity, and access to jobs and education are not environmental because environment are things about the world.
we know that
the surface area of the top of the water
is calculated with the formula of the area of a circle

Step 1
Find the radius of the water tank in the middle of the tank
by proportion

so
For h=5 m
the radius is equal to r=1.5 m
Step 2
Find the surface area


therefore
the answer is
the surface area of the top of the water is 
Answer:
For question one: authoritative
Explanation: