Answer:
Explanation:
friction between two rock surfaces grinding away minerals.
Jackals were one of the most breaded animal for fur coats in the 19th century
Answer:
Reproduction is important for the survival of all living things. Without a mechanism for reproduction, life would come to an end.
Explanation:
Reproduction is a characteristic of all living systems; because no individual organism lives forever, reproduction is essential to the continuation of every species.