Secondary nucleus is
a) Haploid
b)Diploid
c) Triploid
d) Tetraploid

Which of the following is an example of a tissue on the digestive system a.the stomach b.smooth muscle that lines the stomach c.nerve cells in the stomach d. enzyme molecules in the stomach

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation