Plz help with this quick!

The first element on the periodic table of elements is carbon. a. true b. false

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse