Which of the following are the oldest remnants from the formation of the
universe and helps scientists determine the age of the universe? *
Supernova,
Black hole,
White dwarf,
Nebula

White dwarf

Option 3.

Explanation:

White dwarf are very old in existence in the world. The white dwarfs are at least about twelve to thirteen billions years old in existence. These are only slightly younger than the universe itself.

Thus these white dwarfs provide a clear idea about how old the universe is and since when it has come into existence itself. Although not exact but some what idea can be made that it is about more than thirteen billion years old and came into existence back then.

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus