The force that keeps the planets in orbit is. Question options:

mass

gravity

friction

kinetics

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

#20 which type of bond is formed when bases pair in dna? ionic bond covalent bond coordinate bond hydrogen bond

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.