Question

question 39
2.5 pts
which of the following best explains how land and water are interconnected in an estuary?

• water runoff the land and into the estuary which impacts the aquatic life that can be preyed upon by land based animals.
• water soaks into the land from the estuary like a sponge and can harm people if the water in the estuary has low turbidity.
• there is no connection between the land and water.
• water is removed from estuaries to water land to grow crops and improve the fertility of the area.

question 40
2.5 pts
the source of power for the water cycle that constantly cleans and moves water around the earth is the

• sun
• rain
• wind
• fire

Explanation:

Question 39

• Option 1: Water runoff from land to estuary affects aquatic life, which can be prey for land - based animals. This shows the connection between land (via runoff) and water (estuary) and the subsequent ecological link.
• Option 2: Water soaking into land from estuary with low turbidity harming people is incorrect as low turbidity usually means clearer water and not a harm - causing factor in this context, and the direction of water movement (soaking into land from estuary) is less typical in estuary - land interactions.
• Option 3: Saying there is no connection is wrong as estuaries are at the interface of land and water.
• Option 4: Removing water from estuaries to water land for crops is not a typical or main way land and water are interconnected in an estuary.

The water cycle is powered by the sun. The sun's energy drives evaporation (turning liquid water into water vapor), which is a key part of the water cycle. Rain is a part of the water cycle (precipitation), wind can move water vapor but is not the source of power, and fire has no role in powering the water cycle.

Answer:

A. Water runoff the land and into the estuary which impacts the aquatic life that can be preyed upon by land based animals.

Question 40