The more advance the community the more complex the speciess
Answer:
There were 1.2 billion persons in the year 1850
Explanation:
The mantle has properties of both liquids and solids
Answer:
The genotypic ratio shows the number of times a characteristic of an organism will be seen in the offspring when genes for certain traits are crossed. ... The genotypic ratio for this cross is written 1:2:1. In animals and plants, each gene has 2 alleles or variations, one from each parent
Explanation: