Explanation

Protozoa are often studied under parasitology because many are parasites causing diseases like malaria and amoebiasis.

Though protozoa are microorganisms, their parasitic nature makes them a key focus in parasitology.

Explanation

Plasma is the fourth state of matter, following:

1. Solids
2. Liquids
3. Gases

It consists of ionized gases with equal numbers of positively and negatively charged particles.

Explanation

A device that is used to convert AC voltage into DC voltage is called A Rectifier.

Inverters and rectifiers are electronic circuits that can change the type of electric current.

a rectifier converts AC to DC.

Explanation

The core principle behind a hydrogen bomb is the fusion of light atomic nuclei.

Specifically isotopes of hydrogen (deuterium and tritium), under extremely high temperatures and pressures. 

Explanation

 Sweet peas are annual climbing plants with fragrant, butterfly-shaped flowers. 

They are part of the genus Lathyrus within the Fabaceae family. 

The name Lathyrus is derived from the Greek word for "pea," and odoratus means "scented". 

They are cultivated for their beautiful and fragrant flowers.