The first known bird fossil date to the mesozoic era of time.
Explanation:
- The first known bird fossil is Archaeopteryx.
- Archaeopteryx were not exactly like modern birds and are called dinosaur like birds..
- Carbon dating suggest that these birds evolved during the jurassic period of mesozoic era.
- These are considered as the only birds of that era.
- Ancestors of modern birds began to evolve during cretaceous period and kept on evolving through Cenozoic era.
Cell nucleus but some are found in the mitochondria
Answer:
(This could be opinion based, but ok.)
Explanation:
should:Pluto was known as a planet for 75 years. This means that most people already knew it as a planet, and would be extremely confused. All of the books about planets would be inaccurate and changed. Not all people can access brand new books, leading to inaccurate information.
shouldn't: The same reason that it was unclassified as a planet. It does not adhere to all of the rules of being a planet. It is not completely round and does not have a round orbit around the sun. Pluto does not have every requirement to be a real planet, and therefor, it would be incorrect to have it classified wrongly.
Butterflies belong to the phylum Arthropoda.
Difference: Carbon cycle requires life, and the water cycle just requires sunlight. So former would continue to occur without life, but the latter would not.
Similarity: They both use Plants as an Integral component. <span>The </span>water cycle<span> uses plants for uptake of </span>water and transpiration from the surface whereas carbon<span> is used in photosynthesis and also form the body of the plant (through various organic molecules)
Hope this helps!</span>
