How has the use of light and electron microscopes increased our understanding of cells and their function?

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million

Label the steps for protein synthesis in order, beginning with the first steponce the protein is made, the gene for a particular trait is expressedmrna joins the ribosome, and the anticodons from trna join mrna to form a chain ofamino acidsrna polymerase unzips dna and free rna nucleotides join dna to form mrnav a chain of amino acids is formed from peptide bonds, creating a proteinmrna is transported from the nucleus of the cell to the ribosomes of the cell.

Why are some people more concerned about shark survival than about shark attacks?