Which example would be the BEST application of a model to solve a problem? A)
Build a robotic life-size Panda to observe feeding habits.
B)
A 3/5 scaled aquatic environment to study algae populations,
C)
A detailed illustration of the heart to prepare a doctor for heart surgery.
D)
A computer simulation of planetary positions to choose best times to
Launch a robotic lander to Mars.

i got something better   a catchphrase here it is

ahem  

ahem

what the squwock

explanation:

thinking it would be d not too sure but i think it's right

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.