considering periodic trends, valence electrons in which of the following atoms experience the greatest effective nuclear charge (zeff)?

The number of brain synapses is believed to peak at

The volume of a cylinder is 72 tt cm3. if the radius is 3 cm, what is the height of the cylinder?

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.