Make questions to the following sentences

1. Most mesopelagic fishes are small filter feeders which ascend at night to feed in the nutrient rich waters of the epipelagic zone.

2. During the day, they return to the dark, cold, oxygen deficient waters of the mesopelagic where they are relatively safe from predators.

3. Lanternfish account for as much as 65 percent of all deep sea fish biomass and are largely responsible for the deep scattering layer of the world's oceans.

4. Most of the rest of the mesopelagic fishes are ambush predators, like this sabertooth fish.

5. Sonar operators, using the newly developed sonar technology during World War II, were puzzled by what appeared to be a false sea floor 300–500 metres deep at day, and less deep at night. This turned out to be due to millions of marine organisms, most particularly small mesopelagic fish, with swimbladders that reflected the sonar.

6. Most mesopelagic fish make daily vertical migrations, moving at night into the epipelagic zone, often following similar migrations of zooplankton, and returning to the depths for safety during the day.

7. The swimbladder is inflated when the fish wants to move up, and, given the high pressures in the messoplegic zone, this requires significant energy.

8. Some mesopelagic fishes make daily migrations through the thermocline, where the temperature changes between 10 and 20 °C, thus displaying considerable tolerances for temperature change.

9. Mesopelagic plankton feeders have small mouths with fine gill rakers, while the piscivores have larger mouths and coarser gill rakers.

10. Some of the deeper water fish have tubular eyes with big lenses and only rod cells that look upwards. These give binocular vision and great sensitivity to small light signals. This adaptation gives improved terminal vision at the expense of lateral vision, and allows the predator to pick out squid, cuttlefish, and smaller fish that are silhouetted against the gloom above them.

11. Ambush predators are dark, black or red. Since the longer, red, wavelengths of light do not reach the deep sea, red effectively functions the same as black. Migratory forms use countershaded silvery colours. On their bellies, they often display photophores producing low grade light.

12. The stoplight loose jaw is also one of the few fishes that produce redbioluminescence. As most of their prey cannot perceive red light, this allows it to hunt with an essentially invisible beam of light.

Put the words in the correct order to make sentences:

1. These organisms/ water /migrate/ into/feed/on/shallower/plankton/to.

2. Vertical migrations/often/large/occur/distances/over/a/vertical.

3. When/the/the/wants/to/to/depths/fish/return/the/deflated/swimbladder/is.

4. The/vertically/have/swimbladders/migratory/fish.

5. Mesopelagic fish/ are/life/adapted/low/for/an/conditions/active/under/ light.

6. Mesopelagic fish/usually/spines/lack/defensive.

7.Some/of/visible/these/yellow/have/bioluminescence/lenses/predators/ ambient/that/filter/the/light/leaving/the.

8. Bigeye tuna/are/eats/species/an epipelagic/mesopelagic/that/other/fish.

9. These movements are thought to be in response to the vertical migrations of prey organisms in the deep scattering layer.

10.The telescopefish/with/has/eyes/large/forward-pointing/lenses/ telescoping/large.

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