Some species that appear to be very different from other species can actually have similar anatomy. for example the scientist believe that whales involved from land mammals. one reason for this is the presence of several function less hind limb bones still found eternity in the number of whale species. what is the term for a reduced often function some species that appear to be very different from other species can actually have similar anatomy. for example the scientist believe that whales involved from land mammals. one reason for this is the presence of several function less hind limb bones still found eternity in a number of whale species. what is the term for a reduced often functionless anatomical structure that serves as evidence in an organisms evolutionary past

yo the answer is 'vestigial structure' out got it good

adios amigo

Explanation:

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.