The large, flat muscle that moves up and down to alter the volume of the chest cavity is the

Which of the following is the source of energy for photosynthesis? a.) glucose b.) chlorophyll c.) carbon dioxide d.) sunlight

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b.organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.

Which of the following is the sl unit used to measure temperature a. kilogram b. liter c. meter d. kelvin