By the time an infant is 4 months
of age, close vision is already well established. When babies are born,
their vision is not as developed as that of older children or adults. Major
improvements however occur during the first few months of life.
Answer:
Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement.
