Why do astronauts think there is a great amount of mass in the halo of the milky way?

Acladogram is a branching diagram that represents suggested evolutionary relationships among organisms based on the presence of unique traits. a scientist discovers a new organism that lacks limbs and does not have a true backbone. the organism lays eggs to produce offspring and has a cartilage-like rod known as a notochord running along its dorsal surface. on the cladogram below, select the species to which the newly discovered organism is most closely related.

Apatient is in need of hydration. which type of solution are the patient's cells most likely in?

Greenthe fossil record is the history of life recorded byhuman observationgod.climatologists.remains of the past.