B. thickness of rock layers
C. fossil trees rings
D.plant pollens
Answer:
B.thickness of rock layers
Answer:
Vitamins
Explanation:
Vitamins are the organic compounds that are needed by body in small amounts. Most of the vitamins are not synthesized in human body and should be supplemented with food. Vitamins serve as coenzymes or part of coenzyme which are required for the activity of respective enzymes. Hence, vitamins an important part in helping perform cellular reactions.
Answer and Explanation:
Even though Northern seals display a dark brown skin color, their pups are born with a fluffy white coat. This allows them to camouflage with the environment as they are unable to swim like the adults, keeping them away or hidden from predators.
Once they are around three weeks old, they start to lose this layer and begin to look like the "normal" seals.
Moreover, due the predominant climate in which they live, the color of the fur depends on genes and, therefore, enzymes. These enzymes are present during cold temperatures and, due to the warm conditions of the womb, these enzymes are denatured. After the seal pup is born, its cells produce a higher amount of enzymes to adjust to the temperature of their habitat and stays with the brown color to maintain homeostasis.
Answer:
the explanation is in the answer...
Explanation:
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).