Women between the ages of 31 and 50 need slightly less, requiring 2,200 calories and 247.5 and 357.5 grams of carbohydrates each day. After the age of 50, active women should eat between 2,000 and 2,200 calories and 225 to 357.5 grams of carbohydrates each day.
There is a special reason that flatworms are flat. Because of their flatness the area of their 'body' is bigger (so a bigger surface area).Through this characteristic, they are able to diffuse more in and out of their endosystem. because.here is a special reason that flatworms are flat. Because of their flatness the area of their 'body' is bigger (so a bigger surface area).
Flatworms live in many environments. Jupiterimages/Photos.com/Getty Images. Flatworms, also called planarians, belong to the phylum Platyhelminthes. Characterized by flat bodies, they have no circulatory or respiratory organs and a very simple digestive tract.This body plan limits them to very small, flat shapes to allow them to absorb oxygen and moisture.upiterimages/Photos.com/Getty Images. Flatworms, also called planarians, belong to the phylum Platyhelminthes. Characterized by flat bodies, they have no circulatory or respiratory organs and a very simple digestive tract.