Q: What are the most successful organisms on earth? Choices: - trees - humans - pests - bacteria A:
bacteria

(Question)
Q: What type of isotopes have short half-lives and are given in very low doses? Choices: - stable isotopes - gasses - radionuclides - radioisotopes A:
(Answer)
radioisotopes

Ques: Q: Each hemisphere of the brain contains regions called what that are involved in different functions? Choices: - nodes - folds - chambers - lobes A:
Ans: lobes

(Q).
Q: What is the basic characteristic of monoprotic bases? Choices: - accepts one neutron - accepts no neutrons - accepts no protons - accepts one proton A:
(A).
accepts one proton

Ques:Q: Carbon monoxide, radon gas, dust and pet dander are sources of what kind of pollution? Choices: - noise pollution - light pollution - sound pollution - indoor air pollution A:

Ans:indoor air pollution

Q: How many possible alleles do the majority of human genes have? Choices: - three or more - two or less - less than four - two or more A:
two or more