Answer:
Earth's creatures are on the brink of a sixth mass extinction, comparable to the one that wiped out the dinosaurs. That's the conclusion of a new study, which calculates that three-quarters of today's animal species could vanish within 300 years.
Explanation:
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Vestigial Structure
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- <em><u>Vestigial Structure are structures that have no apparent function and appear to be residual parts from a past ancestor.</u></em>
- Vestigial structures are normally homologous to structures that are functioning normally in other species and therefore may be considered evidence for evolution.
- Other examples of vestigial structures include; the human appendix, the pelvic bone of a snake, and the wings of flightless birds.
You can tell if matter is conserved if the substance changes . If the substance changes then matter has been conserved .
Alleles can be recessive or dominant, when this happens the dominant allele is expressed. However, neither a nor b blood group is a recessive allele, so both are expressed in the individual.
