When glass fractures, the first lines that appear on the side opposite the impact are the _________.
Fill in the blank(s) with the appropriate word(s).
Ans: radial fractures
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Why is it necessary to take special safety precautions when using radioactivity?
A. Radioactive substances will ionize cells. B. Radioactive substances have the potential to cause damage to living cells. C. Radioactive substances decay. D. Radioactive substances will perforate plasma membranes.
Secondary metabolites are produced to
A. deter herbivores. B. deter competitors. C. aid in reproduction. D. aid in growth. E. deter competitors and aid in reproduction.
The NADH and the hydrogen ions produced in glycolysis must become __________ in the cytoplasm by donating its electrons to pyruvic acid.
Fill in the blank(s) with the appropriate word(s).
Which organism in the food web would be a secondary consumer?
A) robin B) rabbit C) cricket D) fungi