Your body can over work yourself and than give out
Human chorionic gonadotropin (hCG) is secrete by the embryo early in pregnancy to keep the corpus luteum for dying. This positive feedback will maintain the corpus luteum, which secretes Progesterone and Estrogens throughout pregnancy, in order to keep the endometrium well to nourish the embryo/fetus.
When a lineage splits into multiple line of descents, then, it leads to speciation. It is a process by which a single population evolves into different species. The process of speciation leads to the development of two or more species as the lineages are splitted. These two evolved species are genetically independent.
Hence, the blank can be filled with 'speciation'.
By assembling the rocks into parts of a bigger rock that might have eroded over time.
Answer: True
Explanation: DNA is a feature people have, as well as characters. You may look like your mother or father... But your features is what makes you look a certain way.
This may not be much help, but I tried!!!