In ancient times, people did not know the causes or carriers of diseases. Since they could not come up with a scientific reasno with thier current technology, they diecided that the gods sent the diseases as a punishment for thier sins.
A somatic cell is a cell that is any of the 22 chromosome pairs that aren’t reproductive cells. So, these cells would have the full 26 chromosomes that a frog usually has.
However, since an egg cell is a reproductive cell and needs to combine with another reproductive cell to create one whole combined cell and organism, it would only have 13 chromosomes. The egg cell is like half of a somatic cell, so it will have half of however many the somatic cell will have.
Sometimes called mechanical weathering, physical weathering is the process that breaks rocks apart without changing their chemical composition. These examples illustrate physical weathering:
Swiftly moving water
Answer:
B
Explanation:
For metals, the further away the valence electrons are from the nucleus, the higher the reactivity of the elements. Unlike halogens that are more reactive if the valence orbital shells are closer to the nucleus. This is due to ionization energies – which is the minimum energy required to discharge an electron from its orbit.
For metals this should be lower because they need to lose electrons to attain a stable electron configuration. For halogens it should be high because they don't need to lose electrons, but rather gain, in order to attain stable electron configuration.
Electrons in their orbital shells need to occur in pairs (with opposite quantum states) to be in stable configuration and as long as an atom has orbitals with single electrons, the atoms will be reactive as opposed to when its orbitals are ‘full’.
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