Answer: Has 3 times fewer hydrogen
Explanation:
 
        
             
        
        
        
Active transport requires energy because it moves molecules across a membrane to a region of lower to higher concentration which is often against their concentration gradient or has an obstructing factor.
        
             
        
        
        
The answer is False. The mediastinum is not a cartilage that
forms the lower portion of the breast bone, the mediastinum is the middle part
of the chest cavity, which is located between the lungs of an individual. The
Mediastinum is the area located between the lungs, it contains organs such as
the heart and its large arteries and veins. It may also include the trachea,
the esophagus, the bronchi and last but not the least the lymph nodes.
 
        
             
        
        
        
Answer:
The answer is false. The correct answer is cerebral aqueduct.
Explanation:
Because the foramen is the area that connects the third ventricle of the brain to the two lateral ventricles.
The canal connecting the third and fourth ventricles is called cerebral aqueduct.
 
        
             
        
        
        
Immature seed cones of conifers are usually green before pollination, and flowers of grasses are inconspicuously colored. What does this indicate about their pollination? they are wind pollinated.