Question

Lights in the Depths
Deep in the darkest reaches of the ocean, an anglerfish swims. A tentacle-like stalk extends from
its head, and on the end of the stalk dangles a greenish-blue light, hanging like a lantern in front of the
fish. The fish uses its glowing lure to attract a smaller fish. Snap! The smaller fish has become the
anglerfish’s dinner.
The remarkable bioluminescent light is created by chemicals produced in the anglerfish. It is a
fascinating adaptation that helps the anglerfish survive in a difficult environment.
The anglerfish swims past a flashlight fish. This fish flashes its bioluminescent light to communicate
with other flashlight fish. Then the anglerfish passes a squid, which rises to the surface, its glow helping
it blend in with the moonlight. Swimming below the anglerfish is a loosejaw fish, which gives off a red
light. Most fish can’t see red light, so this helps the loosejaw find its prey without the prey being aware
of the loosejaw’s presence. But the anglerfish senses danger and swims quickly away from the loosejaw.
As the anglerfish moves on, the light of an ostropod blinks behind it, trying to attract a mate. Like the
neon signs on the streets of New York’s Times Square, the ocean waters flash with bioluminescence. The
deep-sea organisms are using their unique adaptations to survive in a variety of ways.
1. What does the passage help you understand about bioluminescence in sea animals?
A. Most animals use it to produce red light.
B. Animals use it for a variety of purposes.
C. Some animals use it as a form of transportation.
D. Animals use it to poison their prey.
2. Which statement describes a theme of the passage?
A. Amazing creatures live deep in the ocean.
B. Sea animals have many ways of catching their prey.
C. Pollution harms the ocean ecosystem.
D. Bioluminescent animals need to be protected.
3. How does the author probably feel about the undersea world in the passage?
A. shocked
B. puzzled
C. fascinated
D. indifferent
4. What is a theme of the passage?
A. Animals have many ways of defending themselves.
B. Every creature is special in its own way.
C. Fish are a lot like people.
D. The deep-sea world is as busy as Times Square.

Answer 1

Answer:

DNS stands for Domain Name System. DNS is a directory service that provides a mapping between the name of a host on the network and its numerical address. DNS is required for the functioning of the internet. Each node in a tree has a domain name, and a full domain name is a sequence of symbols specified by dots.