2. explain how adaptive traits are important in our constantly-changing world

There are two types of behavior:

-Innate behavior  

-Adaptive behavior  

Innate behavior is in-built, behavior, present by default. On the other hand adaptive behavior is what we learn to survive. For example, on a cellular level, our immune system has innate nature to defend us from germs but when it encounters a new type of pathogens, it develops immunity against it along time to keep our body protected.

Similarly in order to survive in a constantly changing environment, adaptability is important.

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.

there's no big difference.

explanation:

the only little different between a rabbit and bunny is just that bunnies are much smaller than rabbits. bunnies are basically baby rabbits.