Answer:It can come from unstable atoms that undergo radioactive decay, or it ... Ionizing radiation can affect the atoms in living things, so it poses a health risk by ... Ionizing radiation comes from x-ray machines, cosmic particles from ... However, as with alpha-emitters, beta-emitters are most hazardous
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Answer:
C. they divide rapidly
Explanation:
Chemo tragets rapidly growing cells which are present in cancerous tumors, hair follicles and bone marrow.
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D
Explanation:
Homologues separate to opposite ends of the cell. Sister chromatids stay together. Telophase I: Newly forming cells are haploid, n = 2.
Answer:
Photosynthetic organisms were making oxygen, but it reacted with the iron dissolved in seawater to form iron oxide minerals on the ocean floor, creating banded iron formations. ... The oxygen that is now in the Earth's atmosphere was not there at the beginning.
Explanation:
