Astorm surge is a dangerous part of a. a tornado. c. the water cycle. b. a thunderstorm. d. a hurricane.

d. a hurricane.

A storm surge is a abnormal rise in the level of water from a sea or ocean. due to the affect of high speed wind. In storm surge water is pushed to offshores. It is characterized as coastal flood. The severity of effects are associated shallowness and orientation of the water body.  A storm surge is a dangerous part of a hurricane. Hurricane is a massive storm that originate from warm water of water body and is thrown offshore caused by high power wind.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

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.