Biology: Age 14

4 illustrated Biology lessons for Age 14.

Smoke reaches the air sacs Inhaled smoke travels down the airways to tiny air sacs in the lungs. There, carbon monoxide slips into the bl…
DNA in Living Things Most living things carry DNA inside their cells. The exact DNA pattern is different for each person.…
Aircraft Fluid Removal Before an aircraft is cut apart, fuel and hydraulic fluid are drained through hoses into sealed drums. Batteri…
One gene copy from each parent Every living thing gets one copy of each gene from each parent, so it has two versions of every trait. When th…