The electrons surrounding an atom are located in regions around the nucleus called “energy levels”. An energy level represents the 3-dimensional space surrounding the nucleus where electrons are most likely to be. The first energy level is closest to the nucleus.
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.
Answer:
The Full Moon Phase
Explanation:
After 14 days, the moon is 180 degrees away from the Sun, with the Sun, Earth and Moon, forming a straight line. The moon would completely be illuminated by the Sun. Hence, this is called the “full moon phase.” This is the only time during the entire month when the Earth's shadow could be close to the moon.
Answer:
Substitution, missense mutation
Explanation:
Mutation is a change in the DNA sequence that can subsequently alter the genetic message.
Substitution mutations occurs when a base is replaced with another different base.
A good example is the one given in the question where the third A in the sequence ACAAAC is replaced by a T.
If this kind of mutation occurs in a protein-coding gene, it will be classified as a frameshift mutation.
Missense mutation is caused when there is a change in a single nucleotide that results to the coding of a different Amino acid
