Ahiker experiences a drop in blood oxygen concentration as he climbs a mountain. which response would be best classified as homeostatic? * the hiker's heart rate decreases in order to lower his oxygen requirements. the hiker's breathing rate increases in order to raise his blood oxygen concentration. the hiker's heart rate increases in order to expel more carbon dioxide from the lungs. the hiker's breathing rate decreases in order to conserve oxygen in the blood.

Which event would lead to primary succession of a forest?

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.

Explain the significance of meiosis in sexual reproduction