Populations of live in the human large intestine. These beneficial organisms help make certain vitamins and digest polysaccharides.
A) bacteria
B) fungi
C) protozoan
D) viruses

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm