What is the most likely cause of a sampling error?
a. a malfunctioning calculator
b. a poorly designed hypothesis
c. very few individuals in the control group
d. having both an experimental and a control group
e. the researcher’s knowledge of which individuals were in the experimental group
c
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According to scientific evidence, early life
could NOT form or persist in the presence of
a. methane gas. b. hydrogen gas. c. oxygen gas. d. water vapor. e. carbon dioxide
The membrane that forms a compartment inside the stroma is the ____
a. thylakoid b. mitochondrion c. lamella d. plastid e. tracheid
Which statement describes Canada geese populations?
a. all Canada geese populations migrate b. all Canada geese breed where they were raised c. like other migratory birds, Canada geese are protected by federal law d. when living together, migratory Canada geese do not interbreed with nonmigratory individuals e. nonmigratory Canada geese have more goslings (baby geese) than migratory geese
All fungi are:
A) autotrophic. B) heterotrophic. C) multicellular. D) unicellular.