Acar travels 180 miles west for 3 hours. what is the average velocity?

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

If the coding part of an mrna molecule is 1800 nucleotides (bases) in length, this molecule will contain codons and code for a polypeptide that is amino acids long.

How are fungi more like an animal? they have a cell wall. they are heterotrophs that absorb their food. they produce seeds and have membrane-bound nucleus. they use sunlight for photosynthesis.