Answer:
a tubular excretory organ, numbers of which open into the gut in insects and some other arthropods.
(oxford languages supplied the definition)
I think it’s D. H2, NaCI, CO
Answer: There are very high amount stars in our galaxy but OUR solar system has only one star. That star is known as the Sun.
Water. the only 4 macromolecules are nucleic acid, carbohydrate, lipids, and protein
