Q: What is the term for the breakdown of unstable isotopes into stable elements? Read this paragraph and choose the correct option from the provided answers: Radioactive decay is the breakdown of unstable isotopes into stable elements. For example, carbon-14 is an unstable isotope of carbon that decays to the stable element nitrogen-14. The rate of decay of an isotope is measured in half-lives. A half-life is the time it takes for half a given amount of an isotope to decay. Choices: - isotopic decay - radioactive decrease - secondary decay - radioactive decay A:
radioactive decay

Q: Diet correlates with the length of what organ system in vertebrates? Read this paragraph and choose the correct option from the provided answers: Choices: - respiratory - reproductive - circulatory - digestive A:
digestive

Q: Q: What do you call a group of organisms of the same species that live in the same area? Read this paragraph and choose the correct option from the provided answers: Communities are made up of populations of different species. In biology, a population is a group of organisms of the same species that live in the same area. The population is the unit of natural selection and evolution. How large a population is and how fast it is growing are often used as measures of its health. Choices: - system - ecosystem - biosphere - population A:
A: population

Question: Q: Light can be used to eject what from a solid material? Read this paragraph and choose the correct option from the provided answers: Under the right conditions, light can be used to eject electrons from a solid material. Choices: - protons - calories - neutrons - electrons A:
Answer: electrons

*Question*
Q: What is it called when liquid water falls from the sky? Read this paragraph and choose the correct option from the provided answers: Choices: - sedimentation - water cycling - erosion - precipitation A:
**Answer**
precipitation

(Q).
Q: Ionic bonds are what kind of attraction between ions? Read this paragraph and choose the correct option from the provided answers: Ionic bonding. Ionic bonds result from electrostatic attractions between positively and negatively charged side chains of amino acids. For example, the mutual attraction between an aspartic acid carboxylate ion and a lysine ammonium ion helps to maintain a particular folded area of a protein (part (a) of http://catalog. flatworldknowledge. com/bookhub/reader/2547 - gob-ch18_s04_s01_f05). Saylor URL: http://www. saylor. org/books. Choices: - kinetic - magnetic - nuclear - electrostatic A:
(A).
electrostatic