CATDOLL : CATDOLL: What percentage of the equatorial squid is visceral?

1. What percentage of the equatorial squid's internal organs are

The viscera of the equatorial squid account for 20%. The carcass of the equatorial squid accounts for 60% of the total weight of the squid. Excluding the viscera, the squid carcass fillet accounts for 40% of the squid.

2. A Chinese ocean-going ship fully loaded with iron ore was returning from Peru. When it crossed the 180th meridian on the way, the...

A. The date is reduced by one day, but the time remains unchanged

The 180-degree longitude is the International Date Line. Going westward you can only add one day, not subtract one. Going eastward you can subtract one day.

The date and the end point remain unchanged because the 180-degree longitude does not completely coincide with the International Date Line. Sometimes, after crossing the 180-degree longitude, the date may not decrease by one day.

The equatorial region passes through the 180th meridian, so this situation will also occur near the equator.

3. The nature of the world's major ocean currents, such as the Peruvian Current, is an upwelling compensatory current.

Wind and ocean currents: North Equatorial Current, South Equatorial Current, North Pacific Current, Guinea Current, North Atlantic Current, East Greenland Current, Westerly Drift, Antarctic Circumference, North Indian Ocean Monsoon Circulation

Density currents: between the Mediterranean and the Atlantic Ocean, between the Red Sea and the Indian Ocean, between the Sea of ​​Japan and the Pacific Ocean, between the Gulf of Mexico and the Atlantic Ocean

Compensatory currents: Kuril Current, California Current, Peru Current, Canary Current, Somalia Current, Labrador Current, Benguela Current, West Australian Current, East Australian Warm Current, Equatorial Countercurrent, Gulf Stream, Japan Current, Agulhas Current,

4. Ocean currents related to the formation of Peruvian fishing grounds

The Peruvian cold current is mainly caused by the upwelling of cold water, which brings up nutrients from the bottom and forms the Peruvian fishing grounds.