D - spine alignment and foot size.
Late australopiths had an S-shaped spine that allowed for balance when standing. Shorter and less flexible toes made pushing off the ground much easier.
It is c.a decrease of gravity!!
Answer:
1 They can help the digestive system break down food
2 they can help you fight off germs
Explanation:
<span>1. c) Exposure would weaken the body’s immune system and leave it unable to fight future infections.
</span>2. <span>c) Excess amounts are removed by the kidneys and excreted along with urine.</span>
Mitochondria is the 'factory' or the 'powerhouse' of the cell! I've just been learning about them too!
