Answer:
To transport signals to the rest of the body and to keep the body upright.
Explanation:
To protect the nerves and keep the body upright. This is because if your spine is broken, then you become paralysed therefore it's an extremely important aspect for the body.
Answer:
flaccid, hypertonic.
Explanation:
It became flaccid due to the low water potential in solution outside of potato cells, hence causing water to leave the potato cells & move into the solution.
Hypertonic solution simply means the concentration of solute is higher & water potential is lower than in potato cells.
Answer:
Evidence for evolution comes from many different areas of biology:
Anatomy. Species may share similar physical features because the feature was present in a common ancestor (homologous structures).
Molecular biology. DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are.
Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.
Fossils. Fossils document the existence of now-extinct past species that are related to present-day species.
Direct observation. We can directly observe small-scale evolution in organisms with short lifecycles (e.g., pesticide-resistant insects).
Answer:
A. the speed of the light ray is the same in air and Medium A.
Explanation:
Answer:
Organisms often preserved by carbonization include fish, leaves and the woody tissues of plants. permineralization or petrifaction takes place in porous materials such as bones, plants and shells
