Question

In an aquatic ecosystem, identify the source of water.

a) Rainfall
b) Underground springs
c) River inflow
d) All of the above

Answer 1

In an aquatic ecosystem, the water source can be rainfall, underground springs, or river inflow, all of which are correct. The main water source for plants is soil, while the term for freshwater from rain or melting ice in the hydrologic cycle is surface runoff. Glaciers and ice caps contain the majority of the world's freshwater.

So, the correct answer is D.

Step-by-step explanation:

In an aquatic ecosystem, water can come from various sources, including rainfall, underground springs, and river inflow. Therefore, the correct answer is d) All of the above. Each of these components plays a role in supplying water to the ecosystem. Rainfall contributes to surface runoff, which flows into rivers and lakes, while underground springs can feed both surface water bodies and groundwater reservoirs. Additionally, river inflow brings water from upstream sources, including meltwater from snow and glaciers.

The main water source for land plants is b. soil; they absorb water through their roots. The term given for freshwater that flows from rain or melting ice is b. surface runoff. When considering the storage of freshwater globally, the majority is contained in E. Glaciers and ice caps, followed by other reservoirs such as groundwater. It's important to realize that watersheds encompass the land that drains into rivers and lakes, which emphasizes the need to protect these areas for continued water quality and availability.

So, the correct answer is D.

Answer 2

The source of water in an aquatic ecosystem can include rainfall, underground springs, and river inflow. Option D 'All of the above' is the answer.

Step-by-step explanation:

Aquatic ecosystems encompass various environments like lakes, ponds, rivers, and wetlands, and the source of water in these systems can be diverse. Rainfall (option a) contributes water directly to surface waters, replenishing lakes and rivers. Underground springs (option b) release water from underground aquifers, feeding into water bodies. River inflow (option c) involves water flowing from upstream areas into rivers and lakes, influencing the water dynamics and chemistry of the aquatic system.

Option d is correct because aquatic ecosystems often integrate multiple water sources, and the combination of rainfall, underground springs, and river inflow collectively sustains the water balance within these ecosystems.

Option D 'All of the above' is the answer.