•Differentiate between virus and viroids.​

Virus is an obligate intracellular parasite which can reproduce only by invading and taking over other cells.

They have a protein coat.

The genetic material may be either DNA or RNA.

Viroids are the smallest infectious pathogens known.

They are composed solely of a short strand of circular, single-stranded RNA that has no protein coating.

Viruses (Virus particles or virions) are usually units consisting of nucleic acids and coat proteins called capsids. Viroids consist only of RNA, i.e. they contain no protein at all. Except for a few cases, viruses are not surrounded by a membrane.

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..nok nok tera bhai aaya

i'd say that the moon rock is about 2.2 billion years old.

a few examples of ethical concerns involving genetically engineering of humans include

-privacy of genetically tested people

- potential side effects

-long term effects