Explanation

Sunlight entering the water may travel about 1,000 meters into the ocean under the right conditions,

but there is rarely any significant light beyond 200 meters.

The ocean is divided into three zones based on depth and light level.

The upper 200 meters of the ocean is called the euphotic, or "sunlight," zone

ND5-07-2023

Explanation

• Humidity in the air was measured by a Hygrometer.
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• A hygrometer is an instrument used to measure relative humidity.
• Humidity is the measure of the amount of moisture in the air.
• A psychrometer is an example of a hygrometer.
• hygrometer.
  
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• The humidity in the air tells us about the ratio of Water vapors in the air

Explanation

Antonie van Leeuwenhoek, a cloth merchant by trade, is credited for the discovery of single-celled microorganisms.
He called them “wee animalcules” (little animals).

Explanation

Phases of the moon occur because we can see only that part of the moon which reflects light towards us.

The changing shape of the bright part of the Moon that we see is called its phase.

The moon is illuminated because it reflects the light from the sun.

The part of the moon facing the sun is lit up.

The part facing away from the sun is in darkness.

Explanation

Malaria is caused by a female mosquito, Anopheles; while dengue is caused by Aedes aegypti mosquito.

Explanation

Explanation

Work, mass and distance are scalar quantities because they have magnitude but no direction, but they are not vector quantities.

Vector Quantities: Velocity, momentum, torque, acceleration, weight, displacement.

Scalar Quantities: Work, distance, speed, mass.

Explanation

Explanation

The Moon's surface gravity is about 1/6th as powerful or about 1.6 meters per second.

The Moon's surface gravity is weaker because it is far less massive than Earth.

A body's surface gravity is proportional to its mass, but inversely proportional to the square of its radius.

Explanation

Solids are packed together tighter than liquids and gases, hence sound travels fastest in solids

Sound can not travel through vaccum