The correct answer is protons and electrons.
Atoms are made of particles called protons (p+), neutrons (n0), and electrons (e-).
Protons and neutrons are located in the center of the atom, making up the nucleus and electrons surround the nucleus.
The charge on the proton and electron are exactly the same size but opposite and their number in the atom is the same when we talk about neutral atoms. Ions are charged atoms, so the number of their electrons and protons are different (for example, positive ions have more protons).
Answer:
Nitrogen
Explanation:
Nitrogen is the most abundant element in our atmosphere and 7th most abundant in the universe. It is vital in the formation of nitrogenous bases which are the key bonds that form nucleic acids such RNA and DNA.
Answer:
The tissues of multicellular, complex animals are four primary types: epithelial, connective, muscle, and nervous. Recall that tissues are groups of similar cells group of similar cells carrying out related functions.
Explanation:
.
Answer:
Genetic variations that alter gene activity or protein function can introduce different traits in an organism. If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation (a process known as natural selection)
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