(Q).
Q: Radioactive decay can give off energy and what else? Read this paragraph and choose the correct option from the provided answers: Radioactive elements and isotopes have unstable nuclei. To become more stable, the nuclei undergo radioactive decay. In radioactive decay, the nuclei give off, or emit, radiation in the form of energy and often particles as well. There are several types of radioactive decay, including alpha, beta, and gamma decay. Energy is emitted in all three types of decay, but only alpha and beta decay also emit particles. Choices: - light - ions - atoms - particles A:
(A).
particles

(Q).
Q: What are groups of young stars loosely held together by gravity called? Read this paragraph and choose the correct option from the provided answers: Open clusters are groups of young stars loosely held together by gravity. Choices: - constellations - galaxies - closed clusters - open clusters A:
(A).
open clusters

(Q).
Q: What organisms known as decomposers break down wastes and dead organisms into smaller molecules? Read this paragraph and choose the correct option from the provided answers: Bacteria known as decomposers break down wastes and dead organisms into smaller molecules. These bacteria use the organic substrates they break down to get their energy, carbon, and nutrients they need for survival. Choices: - consumers - trees - herbivores - bacteria A:
(A).
bacteria