Answer:
Population growth, rising incomes, and more time = more animals.
Explanation:
 
        
             
        
        
        
Answer:
The nutrients that provide energy are commonly referred to as macronutrients (carbohydrates, lipids, and proteins). Carbohydrates and proteins provide a similar amount of energy per gram of food.
Explanation:
 
        
             
        
        
        
Answer:
The correct answer is - organ level organization.
Explanation:
The heart is made up of various types of tissues that include muscle tissue, nerve tissue, and blood tissue. All these types of tissues are organized to form the organ level organization which makes the heart is an organ.
Tissues are made up of cells and organs are made up of tissues and various organs combine together to do a specific function, this is an example of an organ system.
Thus, the correct answer is - organ level organization.
 
        
             
        
        
        
The plant receives energy from the sun and food sources.