A dam is a structure built across a stream or river to hold water back. Dams can be used to store water, control flooding, and generate electricity.
According to Darwin, evolution occurs because of natural selection.
Can you type the question or take a better picture i can’t really see it
A)formed from repeated non-explosive eruptions of flowing lava
Answer:
a. sexual dimorphism was developing over time in these species.
Explanation:
Sexual dimorphism refers to the presence of observable distinct phenotypic differences between the males and females of the same species. In humans, adult males have a larger larynx which is responsible for their deep voice than females. Females have a relatively smaller larynx. Therefore, a trend toward decreasing larynx size in adult females and increasing larynx size in adult males in fossils represents the development of sexual dimorphism in these species.
