A student designs a simple experiment to test whether his pet birds
prefer red-colored toys or green-colored toys. Using the scientific
method, what is the student's next step?
Select one:
O
to identify variables
O
to communicate results
to analyze data
O
to collect data

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons