It is relative dating because no scientist can tell the actually time that the layers of rocks where formed or when the fossil began to degrade
Answer:
Explanation:
Option 4 bescause theres 4 extra cell and they are haploid.
vocabulary 1
1. DNA sequences
2. Homologous structures.
3. Paleontologist
4. analogous structures
5. fossils
6. vestigial
7. Comparative embryology
8. Comparative anatomy
vocabulary 2
1. DNA sequences
2. Analogous structures
3. Comparative anatomy
4. Fossils
5. vestigial
6. homologous structures
7. Comparative embryology
8. structure
9. Scientists
Explanation:
1. Human and apes are evolutionarily closely related based on the analysis of their DNA sequences.
2. Wings of bats and birds serve the same function and are analogous structure.
3. Comparative anatomy is the study of the similarities and differences in structures in similar species.
4. Fossils demonstrate that during the evolution of the whale, the whale moved from land to the sea.
5. The human tailbone and appendix are vestigial organs.
6. The homologous structures are structures that are similar in related organisms because they were inherited from the common ancestor.
7. Comparative embryology is the study of similarities and differences in the embryo of different species.
8. The forelimb of all the mammals has basic bone structure.
9. Scientists who find and study fossils are called paleontologists.
The right answer is: aorta to smaller systemic arteries to systemic capillaries to systemic veins to right atrium through the tricuspid valve.
The blood pathway is divided into two circuits, both beginning and ending in the heart.
- Systemic circulation (or general circulation, or "circulation")
It begins in the left ventricle, which through an artery distributes oxygenated blood to organs. Then the blood returns to the right heart (right atrium) through the cellar veins.
Each organ has an afferent vessel, supplying blood, and an efferent vessel carrying non-oxygenated blood.
- The pulmonary circulation (or "small circulation")
It begins in the right ventricle, from where the pulmonary artery sends blood without hematosis to a single organ, the lung. The blood is then oxygenated and returns to the left heart (left atrium) by the pulmonary veins.
