Lorenz and other ethologists believed that the foundation of the bond between the young of the species and their mothers was

I believe that the answer for the statement above is:

protection

To complete the sentence and to fill in the blank:

Lorenz and other ethologists believed that the foundation of the bond between the young of the species and their mothers was protection.

the first settlements began along the huang river because of the importance of the huang river in the beginning of china. it goes back to the story, “the tale of emperor yu”, which references the tale of the great flood, which was caused by the huang river and was believed to create and influence china’s making.