Model of Area Around Lake
Watersheds (7.8C):Question 10
The model shows an area near a lake. Community leaders are
planning new laws to help protect the lake from pollution. One
proposed law will make it illegal to dump trash on the shore of the
lake, but the law still allows trash to be placed in an area labeled
"Flow-through Wetland."
Flow-through
wetland
Which statement about the proposed law is supported by the model?
Spring
Water table
Select one:
Groundwater flow direction
0
The proposed law will not protect the lake because groundwater will carry
pollution from the wetland directly into the lake
0
The proposed law will protect the lake because plant roots between the wetland
and the lake will stop pollution from entering the lake
0
The proposed law will not protect the lake because animals that live in or near
the lake will add pollution to the lake
0
The proposed law will protect the lake because the high elevation of the water
table will block pollution from entering the lake

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.

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.