Is kelp a heterotroph or an autotrophic?

What causes the color variations in calcite? How does maldistribution occur? What are the three categories of unsaturated hydrocarbons? How many pounds is 6.3 kilograms? How is the shape and function of the cells in the central cylinder of a root similar to a water pipe or blood vessel? What is the meaning of the science word refine? Why is the open ocean so low in productivity? Why was Galileo so interested in parallax? Is there any chance of life on venus? What is the formula name for c8h16? What shape of epidermal cells of tomatoes exhibit? What is an anaerobic respiration process which causes muscle cramps? What direction does the Scotia plate move in? How can you tell that the Huang He and the Chang Jiang flow to the east? What is the chemical equation for the resynthesis of ATP? How much of japan is on the ring of fire? What Position of the sun and earth which determines the length of days and seasons? What percentage of one pound is 5.4 oz? How many time zones are crossed from Honolulu to Egypt going east? Write a description of the potential hazards that people living near Mount Rainier might face?