I think it is 40 percent.hope this helped!
Birds have hollow bones due to the fact thay need to be as light as possible for their wings to generate enough lift for them to fly
13 is bass but I’m not sure what 14 is
White matter is the slightly more pale tissue in the areas of the brain and spinal cord. It consists of nerve fibers with their myelin sheaths (the fatty substance that surrounds and "protects" the axon.
Producers are typically plants, so I believe the correct answers would be 2, 3, 4.
