Can anybody Help me find an analogy for how Chromosomes, genes, DNA can be related! ( take note that I can’t do the book one cuz my teacher already did it )

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?

Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.

What organ is the first to receive nutrients that have been absorbed from the digestive tract?