Ulna is the forearm bone involved in formation of elbow joint
The smallest thing they study is cells, i think!
hoped this helped!!
On early earth, the one that was referred to as "Primordial Soup" is : B. The combination of organic compounds in warm salty water
Many speculated that these organic compounds mutated and evolved into a single cell organism, which became the origin of the organisms on earth
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answer is C- lesson 4 page 11: The Dermal tissue contains the epidermis as well as root hairs.
The respiratory system contains the lungs, so the answer is C. Hope this helps.