Answer:
it happens when 2 organisms jelp each other beneficial.
Explanation:
eg:algae and leguminous plants.the algae live on the roots and take in the nitrogen from the soil,which the plant cannot do and needs for growth.it takes in the nitrogen and pases it to the roots and even make the soil loose for the roots to move and they get a living space(algae on the roots).
The answer is iron. Research has shown an increase in serum iron concentreation in athletes and a concomitant decrease in magnesium ions. The increase in iron concentration is thought to be attributed to tissue injury from the strenuous physical activity. The decrease in magnesium is due to demand by the skeletal muscles.
Explanation:
chicken because ducks take 28 days , turkeys take 28 days , geese take 28 - 33 and the chicken takes 21 days
Answer: Genes
Explanation: Genes that are responsible for muscle strength contributes to athletic performance but if you're being trained for sports and your gene responds to the training, then you may become a good athlete. It is also influenced by environmental factors.
Mother and father traits contribute athletic ability to their child.