One of the major functions of erythrocytes (also known as red blood cells) is to carry blood gases such as oxygen and carbon dioxide around the body. Red blood cells contain the pigment haemoglobin which binds to oxygen and carries it around the body, releasing it and allowing the process of aerobic respiration. 
        
             
        
        
        
Answer:
60-70%
Explanation:
Carbohydrate is the most important source of energy needed in preparation for prolonged exercise that consumes energy and requires endurance and strength to combat fatigue.  
Carbohydrate is a more efficient fuel than fat as carbohydrates are easily broken down  to supply an athlete with glucose as readily available energy, and also glycogen that is stored in the muscles, which are used as a fuel source during exercise. Hence, for prolonged heavy exercise, it is recommended that athletes need high carbohydrate consumption of 60-70 percent of their calories to maintain optimal performance.
 
        
             
        
        
        
Answer:
The answer is 300.
Explanation:
When we cross GG and gg, 100% of the offspring will be heterozygous. If the heterozygotes show 75% penetrance meaning that there is a 75% probability that the plant that has the G gene will actually show it in it's phenotype.
So that means that 75% of the offspring should have dark green color, which means that 300 plants will have the expected phenotype and 100 will not.
I hope this answer helps.
 
        
             
        
        
        
Explanation:
I Guess the first questions Answer is D and The second one is C..Not sure tho