Explanation

Sleep Apnea is a disorder where a person stops breathing for short periods during sleep, often accompanied by loud snoring.

This pause in breathing can occur multiple times throughout the night, disrupting sleep quality.

Explanation

The element required for solar energy conversion is silicon.

Silicon is the most common semiconductor material: Silicon is used in about 95% of solar cells sold today. 

Silicon is a naturally occurring element: Silicon is the second most abundant element on Earth, after oxygen.

Explanation

About WWF

Full form: World Wide Fund for Nature

Logo: Panda

Panda as WWF symbol of: Nature & Wildlife

Established: April, 1961

Headquarters: Gland, Switzerland

Explanation

The elephant is the largest living terrestrial mammal

Size: The elephant is the largest animal on land. 

Other mammals: The blue whale is the largest mammal overall, weighing up to 400,000 pounds and reaching up to 98 feet in length

Explanation

Predator

Carnivores are meat-eating organisms, most often animals.

Carnivores that hunt other animals are called predators.

Hunted animals are called prey.

The animal diet determines where in the food chain, a series of organisms that provide energy and nutrients to other organisms.