Answer:
B
Explanation:
More food, higher population is allowed due to influx of supplies
In the early stages the embryos of four different species will look the same .For example, fish embryos and human embryos both have gill slits. In fish they develop into gills, but in humans they disappear before birth. That what makes them different.
Models are used to stimulate reality and make predictions
Answer:
https://phys.org/news/2009-05-bird-songs-environment.html
Explanation:
