Before the Ice age, about 50 million years ago, temperatures were much higher than they are today, the whole globe enjoyed a tropical climate. At that time forests of large deciduous (e. g. the needle-leaved dawn redwood or the broad-leaved ginkgo) grow near the North Pole. Why did they shed their leaves in the winter

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

Sea stars, sea urchins, sand dollars, and brittle stars are all memeber of a group, what is the common name of the group they are all in

The empty trna moves off and picks up another matching amino acid from the cytoplasm in the cell. the anticodon of the trna, with its attached amino acid, pairs to the codon of the mrna, which is attached to a ribosome. this sequence is repeated until the ribosome reaches a stop codon on the mrna, which signals the end of protein synthesis. the ribosome forms a peptide bond between the amino acids, and an amino acid chain begins to form. when a second trna with its specific amino acid pairs to the next codon in sequence, the attached amino acid breaks from the first trna and is bonded to the amino acid of the second trna.