Which is a mark of a galaxy formed by collapse?(1 point)

uniformly young stars

same age stars

abundant gas and dust

a mix of young and old stars

The Milky Way has changed course to head toward Andromeda.

All galaxies will collide at some point.

The two galaxies have collided previously.

Astronomers have observed their movements over time.

Same age stars is a mark of Galaxy formed by collapse

Explanation:

Before a galaxy can be formed, the materials that help in building the galaxy rotate at a speed, it's the come together and collapse by it self due to it's gravitational pull. When it's collapse globular are formed and it's away from it's nucleus. The clusters this give rise Halo stars which are stars of the same age.

the scientific method.

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