Which of the following statements about radioisotopes is false?
a. The half-life of a radioisotope does not vary with temperature or pressure.
b. Carbon-14 is typically used to date the rocks in which fossils are found.
c. The ratio of carbon-14 to carbon-12 is used in dating fossils.
d. Potassium-40 has an extremely long half-life.
e. The nucleus of a radioisotope can change into that of a different element during decay
B
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The success of camouflage from predatory birds drives the predominant phenotypes in snail color. This is an example
of ____.
a. predation as an agent of natural selection b. sexual selection c. predation as an agent of artificial selection d. the founder effect e. a selectively neutral phenotype
Sperms and eggs are produced by ..... Division .
A. Binary fission B . Meiosis C. Budding D. Mitosis E. Asexual Division
Compare and contrast archaea and bacteria, with particular attention to the features that lead to their placement in separate taxa
What will be an ideal response?
In flowering plants, after fertilization the zygote continuously develops until the seed germinates.
Answer the following statement true (T) or false (F)