Which of the following statements about radioactivity is false?
a. Radioactive decay can transform one element into another
b. Radioactive emissions are due to the spontaneous breakdown of atomic nuclei.
c. Radioisotopes decay into predictable products.
d. Radioactive decay can be accelerated by increasing temperature and pressure.
d
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Mosses are gametophyte plants. What can you predict about them from this statement?
A. Mosses are diploid. B. Mosses grow from seeds (zygotes). C. Mosses are haploid. D. Answers a and c are both correct.
Which of the following is NOT a risk factor for hypertension?
a. smoking
b. obesity c. chronic stress d. excessive salt intake e. diet high in sources of potassium and calcium
John Snow’s work with cholera cases laid the foundation for the science now known as ________, which investigates the occurrence, spread, and distribution of human disease
immunology chemotherapy epidemiology parasitology
The process involving changes in one or more heritable characteristics across many generations is called
A. inbreeding. B. population genetics. C. evolution. D. inheritance of acquired characteristics.