In the mock-up of an airplane cabin, heated yellow bags were placed where people would normally sit in order to replicate the situation where the plane is full of people. The yellow bags were heated since human body temperature is generally at 37 degrees Celcius. This is to correctly construct an experimental model of the airplane cabin.
Around 40% of fish species live in fresh water ecosystems
Well I know that it is not d. The answer that I would choose is the first option a.
To Americans, the history includes both treating Native American tribes as equals and exiling them from their homes. The new U.S. government was thus free to acquire Native American lands by treaty or force. Resistance from the tribes stopped the encroachment of settlers, at least for a while
