The big bang theory states that the universe began approximately 10-20 billion years ago in an expansion of the universe emanating from an extremely compact point. The occurrence of super massive black holes contradict the big bang theory. Super massive black holes are found at the center of galaxies and is what keeps them together. Models do not explain how these would have formed if the big bang occurred the way it was proposed.
The double-helix shape of DNA.
Answer:
Some of the hydrogen bonds with other elements, but most of it remains free hydrogen. Both hydrogen and helium are light elements, so they will tend to evaporate into space over time. ... But the gravity of Earth isn't strong enough, so Earth's early atmosphere of helium and free hydrogen evaporated into space.
Explanation:
Answer:
1) [J] Sand dollar, 2) [G] Ants and grasshoppers, 3) [A], 4) [G]
Explanation:
Please don't be mad if I'm wrong on a few I'm in AP Environmental Science so I'm kind of keen on this stuff but still I'm trying to help!
Answer:
would it be the plants
Explanation:
well all plants are the same and the animals there is more than one
