Why are genetic variability essential for a species to survive? Name the main source of genetic variation. How do these sources work?

Name two main sources of nuclear radiations. How are the nuclear radiations harmful ?

Why are vitamin A and vitamin C essential for us? Give their important sources.

How is sound produced? Name two sources of sound.

Give the scientific name of a species of fungus which is a source of antibiotic

Assertion :Species with low genetic variability are generally at greater risk of extinction than the species with more genetic variability. Reason: Species with low genetic variability are more vulnerable to disease, predators or other environmental challenges.

Which stage is responsible for genetic variations and evolution of species ?

How does the creation of variations in a species promote survival?

Why is genetic variation important in the plant Rauwolfia vomitoria ?

What are carbohydrates ? How do they act as a source of energy?

Why is genetic variation important in the plant Rauwolfia vomitoria?