Pls help if u know the ANSWER During a field trip, Luis notices that an old marble statue looks different from a new marble statue. The surface of an old statue is rough. The new statue is smooth and shiny. After doing research, Luis learns that marble undergoes chemical reactions with acid rain. The reactions cause some of the marble to be worn away. What did Luis observe on his field trip?

Erosion
Deposition
Physical weathering
Chemical weathering

Protein synthesis actually begins in the nucleus when transcribes a single gene on the dna molecule is copied. the process of copying this gene is called this copy is known as and contains the protein building instructions. this copy is sent out into the cytoplasm to the part of the cell known as the the of the ribosome will join together to form a functional ribosome when they attach to the mrna. as the mrna moves through the ribosome, the message is read by transfer rna brings the correct back to the ribosome. the amino acids are placed in the correct order and are hitched together by

In which state was more than 100 billion tons of coal mined in 2005?

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes