The bond that is formed when two amino acids join together is called

The answer is:

Peptide bond

Here is more about it:

A peptide bond is a covalent bond between two amino acids. They are linked together through the bond between their carboxyl group. It is also known as an amide bond.

The structure of an amino acid is basically a central carbon atom linked to an amide group and a carboxyl group, which is also linked to a hydrogen atom. When the carboxyl group connects with another amino acid's carboxyl group water is released and this is called a dehydration reaction .

i need an image of the diagram

estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.