A system that consists of tributaries, watersheds and divides is called a. lake system
c. river system
b. ocean system
d. pond system
Please select the best answer from the choices provided.

Select all the correct answers. which statements fail to meet the requirements of a scientific claim? 1 even though evidence indicates that the solar system's planets follow elliptical paths, copernicus's model involving circular orbits is true. 2 the evidence supporting newton's laws of motion was accurate in newton's time, but the universe operates differently today. 3 flowers that reflect the most ultraviolet light are more likely to attract bees and other pollinators than flowers that reflect less ultraviolet light. 4 in the final 100 meters of a 10,000-meter race, an athlete's speed is more strongly related to anaerobic efficiency than to aerobic efficiency.

The activity of the modern sample is 1.10 bq . how long does that measurement take?

During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane