Question

EXPLAIN the main feature of slash and burn cultivation

Answer 1

Explanation:

(i) Forests are cleared and trees are burnt to make the land available for cultivation. (ii) Digging stick is mainly used for cultivation. (iii) Mainly root crops and food crops are grown for their own use. (iv) After 2 years when the soil becomes impoverished they move to another forest area.

Answer 2

Answer:

An ultrasound scan uses high-frequency sound waves to make an image of a person's internal body structures. Doctors commonly use ultrasound to study a developing fetus (unborn baby), a person's abdominal and pelvic organs, muscles and tendons, or their heart and blood vessels.⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘When used in an ultrasound scanner, the transducer sends out a beam of sound waves into the body. The sound waves are reflected back to the transducer by boundaries between tissues in the path of the beam (e.g. the boundary between fluid and soft tissue or tissue and bone).⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘Ultrasound imaging is also called ultrasound scanning or sonography. It uses a small probe called a transducer and gel placed directly on the skin. High-frequency sound waves travel from the probe through the gel into the body. The probe collects the sounds that bounce back.⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘⚘What Are the Different Types of Ultrasound?

Hysterosonography, also called:

Obstetric Ultrasound, also called:

Ultrasound - Abdomen, also called:

Ultrasound - Abdomen (Children) , also called:

Ultrasound - Breast, also called:

Ultrasound - Carotid, also called:

Ultrasound - General , also called: