When the organism become bipedal, they walk with 2 legs so there are 2 arms that were unused. Some of them try to use that hand by grabbing stick or stone, leading to tools. They start to think more to develop tools and their brain capacity become increased.
The ability to use stone tools will help in food digestion since it can break the food easier. This reduces the needs for bigger teeth/jaw.
I think its a please let me know if im wrong
Answer:
Resting alveolar ventilation is = 3575 ml/min
Exercising a) 5500 ml/min
b) 5525 ml/min
c) 5625 ml/min
increasing both rate and depth has the largest effect and this would happend in real life
Flatworms have a concentration of never tissue and organs in one end of the body. That characteristic would be called, cephalization.
I hope this helps!!
