In what way are the digestive system and circulatory systems alike a:They both perform the same function.
b: they are both structural systems.
c:they are both transport systems.
d:they both involve the same organs ​

Nasa scientists must work together to make sure that everything is correct and accounted for when launching a shuttle. besides a physicist, what other type of scientist would be in making sure that the shuttle has the appropriate type and amount of fuel to reach its destination?

Nucleic acid certain protein cell membranes certain carbohydrates

About __ of the mass of the cell is water