Answer:
Spinal cord is a colon of nerve tissue that runs from the base of the skull to the center of the back.
Its function is to act as a highway communication between the body and the brain.
Explanation:
Complex molecules are made up of other elements bonded with carbon. Carbon is able to bond with other molecules so easily because it has four valence electrons.
ANSWER: B: ONE OF THE SPIRAL ARMS OF THE MILKY WAY
Explanation: There are many arms to every galaxy, in our case, the Milky Way. To each spiral arm is one solar system, which is also why it so difficult to explore space.
Answer:
Carbon is a primary component of all known life on Earth, representing approximately 45–50% of all dry biomass.[1] Carbon compounds occur naturally in great abundance on Earth. Complex biological molecules consist of carbon atoms bonded with other elements, especially oxygen and hydrogen and frequently also nitrogen, phosphorus, and sulfur
