I’m pretty sure the answer is A, but it could be D
Carbon dioxide (chemical formula CO2) is a colorless and odorless gas that is vital to life on Earth. This naturally occurring chemical compound is made up of a carbon atom contently double bonded to two oxygen atoms. Carbon dioxide exists in Earth's atmosphere as a trace gas at a concentration of about 0.04 percent (400 ppm) by volume.Natural sources include volcanoes, hot springs and geysers, and it is freed from carbonate rocks by dissolution in water and acids. Because carbon dioxide is soluble in water, it occurs naturally in groundwater, rivers and lakes, in ice caps and glaciers and also in seawater. It is present in deposits of petroleum and natural gas.
spent a few minutes on this
Answer:
it can travel in material medium but it can't travel in vaccum
They are found in many places such salt and freshwater, they tend to live on the surface of rocks and moist soil
If the distance between the source of light and the plant is increased, the rate of photosynthesis will decrease.
