What statement applies to the horizontal rows or periods in the periodic table?

a.
the properties are all the same.

b.
the elements have the same number of electrons.

c.
the properties change going across each row.

d.
the elements in each row combine easily.

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.