PLEASE HELP EMERGENCY PLEASE!! Question: What can you infer about carbon dioxide from the function of the respiratory system?

It helps you breathe

It is more common than oxygen

It is harmful to your body

It is not found in the body

(This is 7th grade science)

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.

Aresident is five feet tall.what is the measurements in iches

Which of the following molecules could pass through the plasma membrane by simple diffusion? a. na+ ions b. glucose c. amino acids d. carbon dioxide