A battery-powered cart pulls an 800-gram load across the floor. If the load were reduced to 400 grams, and the force used to more the cart remained the same, the cart would

the cart would ultimately move faster than before

Explanation:

If the load on the cart was reduced by half (800-grams to 400-grams) but the force being exerted on the cart remained the same then the cart would ultimately move faster than before. More likely at double the speed, this is because there is less force being exerted in the opposite direction due to friction caused by the load of the cart.

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.

the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

hope it ,

bioteacher101