Protons, neutrons, and electrons are all
A. forms of radioactive energy.
B. equal in mass.
C. subatomic particles that make up atoms.
D. negative ions.
E. charged particles.
Answer: C
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Indicate whether the statement is true or false
Explain the key differences between r- and K-strategists, their life histories, and their reactions to environmental changes. Where do the r and K come from in population equations? What do they stand for?
What will be an ideal response?
Which is an example of a nonmetallic mineral? Ca = calcium, Cu = copper, Al = aluminum
A. gypsum: CaSO4 B. azurite: Cu3(CO3)2(OH)2 C. gold: Au D. gibbsite: Al(OH)3
Australia's number one trade partner is
A) United States B) India C) China D) New Zealand E) Taiwan