Explanation

• Bats can also fly in the dark because they are capable of taking the help of   Ultrasonic Waves 
• ***
• concept:
• They are guided by ultrasonic waves produced by them.
• Bats are guided by ultrasonic waves which they produce and enable them to fly in the dark
  
  

Explanation

Natural rubber is made by extracting a liquid sap, called latex.

Latex is gathered from the trees by making a cut in the bark and collecting the runny sap in cups. This process is called tapping.

Largest Country produced Natural rubber

Explanation

Leather is a durable and flexible material created by tanning animal rawhide and skins.

The major ingredient of leather is Collagen.

• clothing,
• footwear,
• handbags,
• furniture,
• tools 
• sports

SH10-8-2023

Explanation

SGOT (Serum Glutamic-Oxaloacetic Transaminase) and AST (Aspartate Transaminase) are enzymes found in the liver.

Elevated levels of SGOT/AST in the blood indicate liver damage or inflammation, which can be a sign of:

• Hepatitis (liver inflammation)
• Liver cirrhosis
• Liver cancer
• Liver damage due to drugs or toxins

Explanation

The most serious environmental effect posed by hazardous wastes is Contamination of Groundwater.

Toxic substances from hazardous waste can seep into the soil and contaminate underground water sources.

It affecting ecosystems and human health.

Explanation

• Bombyx mori, which is the scientific name for the Mulberry silkworm.
• This species is widely cultivated for its silk production.
• It is often referred to as the "Domesticated silkworm" or simply "Silkworm".

Explanation

A normal healthy human breathes about 11,000 litres of air in a day

breath air by the process of breathing                                               

Additional information:

The average adult at rest inhales and exhales something like 7 or 8 liters of air per minute.

Explanation

• RNA polymerase is the enzyme responsible for transcribing DNA into RNA during the process of transcription.
• It reads the template DNA strand and adds nucleotides to a growing RNA chain.

Explanation

Friction can be reduced by changing from sliding to rolling.

Replace sliding friction with rolling element friction.

Such as with the use of rolling element bearings.

Explanation

Malaria is caused by Plasmodium parasites.

The parasites are spread to people through the bites of infected female Anopheles mosquitoes, called "malaria vectors.