The Answer is C Gas exchange take place in our lungs
False in order for an ecosystem to survive there has to be some sort of competition. for example, if there were no sharks to eat little fish the little fish would over populate and then the little fish would run out of food which then means that whatever the little fish ate is now extinct and so on hinting the food chain's name. If it wasn't for competition nothing would survive
10-15% of energy is transferred between a producer and primary consumer.
Plant cells have all of these, but only a plant cell has a chloroplast.
