The answer is b, for he is comparing the two rocks to find an age relative to the other
The study of the lives of early human communities through the examination of their physical remains. Objects made by humans that are unearthed by archaeologists. ... The study of the earth, especially it's rock forms.
Answer:
Biological membranes consist of a double sheet (known as a bilayer) of lipid molecules. This structure is generally referred to as the phospholipid bilayer. In addition to the various types of lipids that occur in biological membranes, membrane proteins and sugars are also key components of the structure.
Explanation:
The spiders that survived the first pesticide spraying were resistant to the pesticide and when they reproduced most of their offsprings got the gene of pesticide resistance.