The total number of protons and neutrons in an atom can best be determined by
A) atomic mass.
B) the subscript number following the chemical symbol.
C) the atomic number.
D) the charge of the atom.
E) the chemical symbol.
A
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Leaching is most likely to affect the nutrients plants need in which soil horizon?
A. Bedrock B. Subsoil C. Topsoil D. Soil base
Several molecules of CO2 must be captured during the Calvin cycle of photosynthesis for every molecule of glucose that is manufactured.
a. true b. false
You are studying with a classmate who asks you about the concept of a replacement rate. She wants to know what happens to a population if the replacement rate is reached? She also assumes the average human replacement rate is 2.0. What would you tell her?
A. When replacement rate is reached, the population is in equilibrium. The replacement rate is equal to 2.0 to replace both mother and father. B. When replacement rate is reached, the population declines. The replacement rate is greater than 2.0 to make up for declining birth rates. C. When replacement rate is reached, the population is in equilibrium. The replacement rate is greater than 2.0 because some individuals die before they reproduce. D. When replacement rate is reached, the population declines. The replacement rate is lower than 2.0 to make up for increasing birth rates. E. When replacement rate is reached, the population increases. The replacement rate is lower than 2.0 to make up for increasing birth rates.
base
What will be an ideal response?