I think it is B I had done these.
The research about Linnaeus helped us discover the similarities between different species.The fossils help us understand like taxonomy
Answer: The answer is the last option, Backflow of blood through a defective valve.
Explanation: Hypotension causes high blood pressure, and the other two options are not related to heart murmurs. A hear murmur is when the blood isn't flowing in the right direction causing the hear to beat irregularaly.
Motor end plates are associated with muscle contraction definitely, and I would say also <em>neuron transmitter, </em>although I'm not sure about that one.
Answer:
Living organisms undergo growth and development. Every living organism begins life as a single cell.
