I believe it is D, to protect weakened ecosystems and their wildlife
Answer:
Number of bacteria required 
Explanation:
Given -
Size of each bacterium 
micrometers long
These bacteria are arranged end to end.
The size of chain to be formed is equal to 
centimetres
Let us say that in forming a chain of centimetres nearly X number of individual bacterium are required.
hence, number of bacterium required to form centimetres chain can be represented as
Number of bacteria required
→ The Dietary Guidelines for Americans recommends that carbohydrates make up 45 to 65 percent of your total daily calories.
So, if you get 2,000 calories a day, between 900 and 1,300 calories should be from carbohydrates. That translates to between 225 and 325 grams of carbohydrates a day.
There you go! I really hope this helped, if there’s anything just let me know! ☻
Its the color of crystals formed depends on the speed of evaporation
