Which of the following best describes a noncontact force?
a. a force that is able to act at a distance
b. a force that must be physically touching the object it acts on
c. a force that always pulls objects backward
d. a force that always pushes objects forward

A.) a force that is able to act at a distance

Explanation:

A non contact force is a force that doesn't need to be physically touching and object to have it's force used

(I might be wrong though correct me if I am)

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.

answer; the code in musculoskeletal system subsection is associated with deep tissue possibly to the bone;