Q: Q: What planet is closest to our sun? Choices: - Earth - Venus - Pluto - mercury A:
A: mercury

Q: Q: While climate change in earth history was due to natural processes, what is primarily to blame for recent global warming? Choices: - wars - volcanos - factories - human actions A:
A: human actions

Q: Q: Plant cuttings are an example of what type of reproduction? Choices: - homosexual - heterosexual - autosexual - asexual A:
A: asexual

Q: Q: What is used to date older fossils? Choices: - search engines - litmus testing - electron microscopes - radioactive isotopes A:
A: radioactive isotopes