C, a zygote is produced through fertilization. hope this helps
Answer:
any of a number of organized or specialized structures within a living cell.
Explanation:
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Answer:
Scientists once thought the most fundamental building block of matter was a particle called the atom. Now we know that the atom is made of many smaller pieces, known as subatomic particles. Every atom contains a central core called the nucleus, made of particles called protons and neutrons.
