Question

1. the text says currents and waves help marine ecosystems. which specific example from the passage shows how they help?

a. waves always make water warmer.
b. waves make all coastlines the same shape.
c. currents stop storms from forming.
d. surface currents carry warm water to colder regions, and waves mix water layers to distribute oxygen and nutrients.

1. how can ocean currents affect weather, according to the passage?

a. they control the number of clouds in the sky.
b. warm currents can lead to warmer air temperatures while cold currents can cool the air, affecting local weather and global climate patterns.
c. currents always cause storms.
d. currents do not affect the weather at all.

1. which sentence best summarizes the final paragraph (the summary) of the passage?

a. understanding ocean currents and waves is important because they shape coastlines, influence weather, and support marine life, helping us protect oceans and creatures.
b. ocean currents and waves are only useful for shipping and travel.
c. waves are harmful to all marine life.
d. deep ocean currents are the only important part of the ocean.

Explanation:

Question 8

• Option A: Waves don't always make water warmer (incorrect, as waves' main role isn't warming water uniformly).
• Option B: Waves don't make all coastlines the same shape (coastlines vary due to many factors, so this is wrong).
• Option C: Currents can't stop storms from forming (storms form due to other meteorological factors, so this is incorrect).
• Option D: Surface currents carrying warm water to colder regions and waves mixing water layers to distribute oxygen and nutrients is a valid example of how they help marine ecosystems (matches the role of currents and waves in marine ecosystems).

• Option A: Ocean currents don't control the number of clouds (cloud formation is due to other atmospheric processes, so this is wrong).
• Option B: Warm currents warm air, cold currents cool air, affecting local weather and global climate (this is a correct explanation of how ocean currents affect weather, as temperature transfer between water and air occurs).
• Option C: Currents don't always cause storms (storms have multiple causes, so this is incorrect).
• Option D: Currents do affect weather (so this is wrong).

• Option A: The final paragraph likely summarizes that understanding ocean currents and waves is important as they shape coastlines, influence weather, support marine life, and help protect oceans (this covers their multiple roles, making it a good summary).
• Option B: Ocean currents and waves have more uses than just shipping and travel (so this is incorrect).
• Option C: Waves aren't harmful to all marine life (they support marine ecosystems, so this is wrong).
• Option D: Deep ocean currents aren't the only important part (surface currents and waves are also important, so this is incorrect).

Answer:

D. Surface currents carry warm water to colder regions, and waves mix water layers to distribute oxygen and nutrients.

Question 9