Fast what is the simplest form of cellular organization in a multicellular organism? a. cells b. tissues c. organs d. organisms

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above