Answer:Astronomers estimate the age of the universe in two ways: 1) by looking for the oldest stars; and 2) by measuring the rate of expansion of the universe and extrapolating back to the Big Bang; just as crime detectives can trace the origin of a bullet from the holes in a wall.
Explanation:
D. because Facebook averages about 1.7 billion users everyday!
Hope this helps! Have a wonderful day and good luck! If you need more help, don't be afraid to ask! I'd be happy to assist you!
Can you put this as BRAINLIEST? Thank you so much
A speices usaully can only breed with the same species unless it is done in a lab with their DNA and sometimes that doesnt work
Glial cells is to neurons
