Amalignant cancer differs from a benign cancer in that: malignant cancers invade surrounding tissue and benign cancers do not. malignant cancers are lethal and benign cancers are not. malignant cancers are caused by viruses and benign cancers are not. benign cancers are lethal and malignant ones are not.

the answer is: metamorphic rocks often show the presence of fossils, also a

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-lavira: )

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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