Answer:
Old Rivers : Travel Very Slowly
Young Rivers : Travel Fast
Mature Rivers : Travel Slowly
Explanation:
(Apex)
Answer: 4 g/cm cubed
Explanation: density is mass divided by volume so 36 g divided by 9 cm cubed is 4 g/cm cubed
Proteins, lipids (fats), carbohydrates (sugars) and nucleic acids (DNA and RNA).
this might help as well - http://classroom.synonym.com/four-organic-molecules-found-living-things-22326.html
In animals, the circulatory system performs a similar function because it transports vital nutrients around the body of the animal, just like how xylem and phloem transport water, minerals, and sugar to different parts of the plant.
Plant, dog, person, and horse.