Answer:
1) Index fossils are of organisms that lived over a wide area. They lived for a fairly short period of time. An index fossil allows a scientist to determine the age of the rock it is in.
2) Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages.
Explanation:
Answer: I think it is D
Explanation:
We learned this already and I dont remember doing d
Answer:
A. May be subject to erosion
Explanation:
Usually the climate remains constant
Variance in human skin color is an example of polygenic inheritance.
Explanation:
Polygenic inheritance takes place when two or more gene controls a one characteristics. Sometimes the gene are more in amount but the genes have less effect. Certain examples of polygenic inheritance are skin color, eye color and weight, height, Polygenic inheritance can be found in other organisms as well.
Polygenic inheritance is important because alleles do not show dominance but each allele contribute which provides an additive effect and thus allele can interact in different way.
