It will be 1 and 2.
This is not biology. This is Science.
Answer: B. Osmosis Across a Membrane
The movement of water across a gradient is called osmosis.
Answer:
Bipedalism freed the hands so they could be used to cart food, make and use weapons and other advantages of freed hands. Bipedalism is a much more efficient way to walk and run and this fact is quantified. Bipedalism raised the early proto-human above the horizontal so he could see predators approaching. Bipedalism is a much more efficient design to cool down overheating bodies.
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