Reproduction by mitosis duplicates:

chromosomes
genes
dna
all of the above

Asap! how does the distance between two objects affect the force of gravity? how is the moon dependent on the sun?

When is your respiration rate likely to change? a. when your intestines are digesting b. when your cells have too much glucose c. when your cells need more oxygen d. when your liver is working after a meal

Which is not a likely outcome after extensive irrigation of dry farmland? useless, unproductive soil salinization of the soil depletion of groundwater nutrient-rich soil