Answer:
Paul B. MacCready, 81; inventor of human-powered aircraft, other innovations. Paul B. MacCready, the Caltech-trained scientist and inventor who created the Gossamer Condor -- the first successful human-powered airplane -- as well as other innovative aircraft, has died. He was 81.
Explanation:
mass/volume = density.
if bigger than water, sinks
less than water floats.
Archimedes' principle, floatation, icebergs etc
Answer: it’s the first one I think
Explanation:
The closer to the equator, the hotter the climate will be.
