Explanation is in the file
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Answer: <u>Option C, stay on the top of the snow
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Explanation: Animals have physical features which help them survive in their habitats, protect them from predators and even face adverse weather conditions. Some adaptations are according to the easy movement of the animals. For example- snowshoe rabbits have bigger feet so that they can jump on the top of the snow without digging into it.
Atomic number of an atom equals to the number of nucleus in the nucleus of the atom. Therefore, the answer is 74.
The proton of an element is never changed. No matter if it's an atom or ion. It's like an ID number for an element. It defines the type of element. Don't mix up atomic number with mass number though, mass number is the total sum of of the number of protons and neutrons in an atom.
Theres one more subatomic particle in an atom, that is electrons. But since they're too light, they won't be counted in mass. Also, the number of electrons in an atom equals to the number of proton, also the atomic number. If the number of electrons is different, it's no longer an atom, but an ion.
I <em>believe</em> we can tell that the universe is expanding due to <u>redshift light. Option D.</u>
